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THE VIJAYANAGAR EMPIRE, 1336–1646 Founded in 1336 in the wake of the rebellions against Tughluq rule in the Deccan, the Hindu Vijayanagar empire lasted for more than two centuries as the dominant power in south India. Its history and fortunes were shaped by the increasing militarization of peninsular politics after the Muslim invasions and the commercialization that made south India a major participant in the trade network linking Europe and East Asia. Urbanization and monetization of the economy were the two other significant developments of the period that brought all the peninsular kingdoms into highly competitive political and military activities in the race for supremacy. Development of the state The kingdom of Vijayanagar was founded by Harihara and Bukka, two of five brothers (surnamed Sangama) who had served in the administrations of both Kakatiya and Kampili before those kingdoms were conquered by the armies of the Delhi sultanate in the 1320s. When Kampili fell in 1327, the two brothers are believed to have been captured and taken to Delhi, where they converted to Islam. They were returned to the Deccan as governors of Kampili for the sultanate with the hope that they would be able to deal with the many local revolts and invasions by neighbouring Hindu kings. They followed a conciliatory policy toward the landholders of the area, many of whom had not accepted Muslim rule, and began a process of consolidation and expansion. Their first campaign was against the neighbouring Hoysala king, Ballala III of Dorasamudra, but it stagnated; after the brothers reconverted to Hinduism under the influence of the sage Madhavacarya (Vidyaranya) and proclaimed their independence from the Delhi sultanate, however, they were able to defeat Ballala and thereby secure their home base. Harihara I (reigned 1336–56) then established his new capital, Vijayanagar, in an easily defensible position south of the Tungabhadra River, where it came to symbolize the emerging medieval political culture of south India. The kingdom’s expansion in the first century of its existence made it the first south Indian state to exercise enduring control over different linguistic and cultural regions, albeit with subregional and local chiefly powers exercising authority as its agents and subordinates.

THE VIJAYANAGAR EMPIRE, 1336–1646retain accounts ]] from the fourteenth century, in more or less legendary form, of Majapahit's power. Majapahit's direct administration did not extend

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THE VIJAYANAGAR EMPIRE, 1336–1646 Founded in 1336 in the wake of the rebellions against Tughluq rule in the Deccan, the Hindu Vijayanagar empire lasted for more than two centuries as the dominant power in south India. Its history and fortunes were shaped by the increasing militarization of peninsular politics after the Muslim invasions and the commercialization that made south India a major participant in the trade network linking Europe and East Asia. Urbanization and monetization of the economy were the two other significant developments of the period that brought all the peninsular kingdoms into highly competitive political and military activities in the race for supremacy. Development of the state The kingdom of Vijayanagar was founded by Harihara and Bukka, two of five brothers (surnamed Sangama) who had served in the administrations of both Kakatiya and Kampili before those kingdoms were conquered by the armies of the Delhi sultanate in the 1320s. When Kampili fell in 1327, the two brothers are believed to have been captured and taken to Delhi, where they converted to Islam. They were returned to the Deccan as governors of Kampili for the sultanate with the hope that they would be able to deal with the many local revolts and invasions by neighbouring Hindu kings. They followed a conciliatory policy toward the landholders of the area, many of whom had not accepted Muslim rule, and began a process of consolidation and expansion. Their first campaign was against the neighbouring Hoysala king, Ballala III of Dorasamudra, but it stagnated; after the brothers reconverted to Hinduism under the influence of the sage Madhavacarya (Vidyaranya) and proclaimed their independence from the Delhi sultanate, however, they were able to defeat Ballala and thereby secure their home base. Harihara I (reigned 1336–56) then established his new capital, Vijayanagar, in an easily defensible position south of the Tungabhadra River, where it came to symbolize the emerging medieval political culture of south India. The kingdom’s expansion in the first century of its existence made it the first south Indian state to exercise enduring control over different linguistic and cultural regions, albeit with subregional and local chiefly powers exercising authority as its agents and subordinates.

Conquests In 1336 Harihara, with the help of his brothers, held uneasy suzerainty over lands extending from Nellore, on the southeast coast, to Badami, south of Bijapur on the western side of the Deccan. All around him new Hindu kingdoms were rising, the most important of which were the Hoysala kingdom of Ballala and the Andhra confederacy, led by Kapaya Nayaka.

During Harihara’s reign the administrative foundation of the Vijayanagar state was laid. Borrowing from the Kakatiya kings he had served, he created administrative units called stholas, nadus, and simas and appointed officials to collect revenue and to carry on local administration, preferring Brahmans to men of other castes. The income of the state apparently was increased by the reorganization, although centralization probably did not proceed to the stage where salaried officials collected directly for the government in most areas. Rather, most land remained under the direct control of subordinate chiefs or of a hierarchy of local landholders, who paid some revenue and provided some troops for the king. Harihara also encouraged increased cultivation in some areas by allowing lower revenue payments for lands recently reclaimed from the forests. Consolidation Harihara was succeeded by Bukka (I; reigned 1356–77), who during his first decade as king engaged in a number of costly wars against the Bahmanī sultans over control of strategic forts in the Tungabhadra-Krishna Doab, as well as over the trading emporia of the east and west coasts. The Bahmanīs generally prevailed in these encounters and even forced Vijayanagar to pay a tribute in 1359. The major accomplishments of Bukka’s reign were the conquest of the short-lived sultanate of Maʿbar (Madurai; 1370) and the maintenance of his kingdom against the threat of decentralization.

The control of ports on both coasts provided opportunities for the acquisition of increased wealth through trade.

THE SRIVIJAYA EMPIRE: TRADE AND CULTURE IN THE INDIAN OCEAN

The Srivijaya Empire controlled modern-day Indonesia and much of the Malay Archipelago from the seventh to twelfth centuries. The empire traded extensively with India and China, incorporating Buddhist and Chinese political practices into their traditions. Interactions among different peoples along trade routes led to syncretism, or blending, of religious and political ideas. The Srivijaya Empire, which controlled much of the Malay Archipelago in the Indian Ocean from the seventh to twelfth centuries, is a perfect example of this cultural blending. The Malay Archipelago is a group of islands between Indochina and Australia and includes modern-day Indonesia, East Malaysia, and the Philippines.

Trade The Srivijaya Empire controlled two major passageways between India and China: the Sunda Straits from the city of Palembang and the Strait of Malacca—see the Sunda Strait, in the south, and the Strait of Malacca, to the north, on the map above. This control strengthened trade routes to China, India, and even Arabia. Some of

the goods the people in the empire traded included ivory, tin, nutmeg, sandalwood, and strong-smelling camphor and aloes that were used for medicinal purposes. The empire had access to the trade network of spices from India and goods like silk and porcelain from China. Even though we don’t have much political evidence about the scope of the Srivijaya Empire, records of trade between the Srivijayans and the Chinese make it clear that Srivijaya was a key economic actor. Chinese records show evidence of Srivijayan trade expeditions to the Song dynasty as well as China’s acceptance of the Srivijaya Empire as a vassal. Vassal states are subordinate to another nation. As a vassal to China, Srivijaya acted as a mediator between China and other smaller states on the Malay Archipelago. China considered it a great honor to bestow vassal status on another empire, so we know that the economic relationship between the two regions was strong.

Buddhism in the Srivijaya Empire and beyond Palembang, a major city of the Srivijaya Empire, became a well-known stop for Chinese Buddhist pilgrims on their way to India, the birthplace of Buddhism. More than one thousand Buddhist monks lived in the city, and Buddhist travelers were welcomed there to study Buddhist texts. A particularly popular form of Buddhism in the Srivijaya Empire was Vajrayana Buddhism, a mystical form of the religion that involved the cultivation of magical or supernatural powers through yantras, or special symbols. The Srivijaya Empire became a center for this form of Buddhism. One reason the version of Vajrayana Buddhism that developed in the Srivijaya Empire was so successful was that Srivijayan leaders combined Buddhist thought with indigenous beliefs about magic—another example of cultural syncretism. Vajrayana Buddhism originated in India but became popular in the Srivijaya empire during the same time period, indicating that trade connections between the two regions in the seventh century may have influenced each other’s religions. The influence of Buddhism also affected political structures in the Srivijaya Empire. Srivijayan rulers incorporated Buddhist philosophy into their public image. For example, an inscription detailing a speech from a park dedication in 684 CE depicts a Srivijayan king, Sri Jayanasa, as a bodhisattva, or someone who has already achieved buddhahood. By praying aloud during his speech that the park would provide a benefit to all living things, Sri Jayanasa showed that he was attempting to position himself as a religious authority as well as a political one. This dedication is the first time on record that a Srivijayan ruler also claimed the role of a religious figure. The fact that the king felt associating himself with Buddhism would help his image indicated the importance of Buddhism in the Srivijaya Empire during the seventh century.

Malay language Old Malay was the language of business and trade in the Srivijaya Empire. To successfully navigate the ports and marketplaces throughout the Malay Archipelago, a person had to be able to speak Old Malay. Establishing a standard means of communication made business transactions more efficient.

MAJAPAHIT

Majapahit was an Indianized kingdom based in eastern Java from 1293 to around 1500. Its greatest ruler was Hayam Wuruk, whose reign from 1350 to 1389 marked the empire's peak, when it dominated other kingdoms in the southern Malay Peninsula, Borneo, Sumatra, Bali, Kalimantan and eastern Indonesia, and the Philippines.

The Majapahit empire was the last of the major Hindu empires of the Malay archipelago and is considered one of the greatest states in Indonesian history. Majapahit society developed a high degree of sophistication in both commercial and artistic activities. Its capital was inhabited by a cosmopolitan population among whom literature and art flourished. It had a thriving cash economy, based on rice cultivation and trade, which supported a wide variety of industries and professions. Around 1527 it succumbed to the Sultanate of Demak.

'Surya Majapahit' (The Sun of Majapahit) is the emblem common found in Majapahit ruins. It probably served as the coat of arms of the

Majapahit empire.

The statue of Harihara, the god combination of

Shiva and Vishnu. It was the mortuary deified portrayal of Kertarajasa.

After defeating Srivijaya in Sumatra in 1290, Singhasari became the most powerful kingdom in the area. Kublai Khan, the ruler of the Chinese Yuan Dynasty, challenged Singhasari by sending emissaries demanding tribute, but Kertanegara, the last ruler of Singhasari, refused. In 1293, Kublai Khan sent a massive expedition of one thousand ships to Java. Golden Age Hayam Wuruk, also known as Rajasanagara, ruled Majapahit from 1350–1389. During this period, Majapahit attained its peak with the support of his Prime Minister, Gajah Mada. Under Gajah Mada's command (1313–1364 C.E.), Majapahit’s armies conquered more territory. In 1377, a few years after Gajah Mada's death, Majapahit sent a punitive naval attack against Palembang, contributing to the end of the Srivijayan kingdom. Gajah Mada's other renowned general, Adityawarman, was known for his conquest of Minangkabau. The Nagarakertagama, written in 1365, depicts a sophisticated court with refined taste in art and literature, and a complex system of religious rituals. The poet describes Majapahit as the centre of a huge mandala extending from New Guinea and Maluku to Sumatra and Malay Peninsula. Local traditions in many parts of Indonesia retain accounts ]] from the fourteenth century, in more or less legendary form, of Majapahit's power. Majapahit's direct administration did not extend beyond east Java and Bali, but challenges to Majapahit's claim to overlordship of the outer islands drew forceful responses. The nature of the Majapahit empire and its extent is subject to debate. It may have had limited or entirely notional influence over some of the tributary states including Sumatra, the Malay Peninsula, Kalimantan, and eastern Indonesia, as claimed in the Nagarakertagama. Geographical and economic constraints suggest that rather than being organized under a centralized authority, the outer states were most likely to have been connected mainly by trade, which was probably a royal monopoly. Majahapit also claimed relationships with Champa, Cambodia, Siam, southern Burma, and Vietnam, and even sent missions to China. Although the Majapahit rulers extended their power over other islands and destroyed neighboring kingdoms, they seem to have concentrated on controlling and gaining a larger share of the commercial trade that passed through the archipelago. About the time Majapahit was founded, Muslim traders and proselytizers began entering the area.

DELHI SULTANATE

Overview Qutb-ud-Din Aybak, a slave who rose to the rank of general under the command of the Afghan ruler Muhammad of Ghor, defeated the Chauhan Rajput king, Prithvi Raj, and captured Delhi in 1192. Following the death of Muhammad of Ghor in 1206, Qutb-ud-Din Aybak proclaimed himself Sultan of Delhi and established the Mamluk (or Slave) dynasty, the first of five successive dynasties with their capital in Delhi that collectively came to be known as the Delhi Sultanate. The four unrelated Turkish and Afghan dynasties that followed, including the Khaljis, the Tughluqs, the Sayyids, and the Lodis, ruled North India for more than 300 years, until 1526. The early sultanate dynasties introduced Persian language, literature, culture, law, as well as practical and agricultural innovations. Ethnic and linguistic pluralism marked this period, with Muslim rulers ruling over a primarily non-Muslim population. Cross-cultural influences can be seen in the tradition of Sufi devotionalism that informed and was informed by Indic bhakti devotion. By the 15th century, the sultanate had broken into a series of regional kingdoms. The sack of Delhi by Timur (or Tamerlane) in 1398 stripped the sultanate of most of its power. In 1526, the sultanate fell to Zahiruddin Muhammad Babur, the first emperor of the Mughal dynasty. In Detail The Delhi sultanate, was the principal Muslim sultanate in north India from the 13th to the 16th century. Its creation owed much to the campaigns of Muʿizz al-Dīn Muḥammad ibn Sām (Muḥammad of Ghūr; brother of Sultan Ghiyās̄ al-Dīn of Ghūr) and his lieutenant Quṭb al-Dīn Aibak between 1175 and 1206 and particularly to victories at the battles of Taraōrī in 1192 and Chandawar in 1194. The Ghūrid soldiers of fortune in India did not sever their political connection with Ghūr (now Ghowr, in present Afghanistan) until Sultan Iltutmish (reigned 1211–36) had made his permanent capital at Delhi, had repulsed rival attempts to take over the Ghūrid conquests in India, and had withdrawn his forces from contact with the Mongol armies, which by the 1220s had conquered Afghanistan. Iltutmish also gained firm control of the main urban strategic centres of the North Indian Plain, from which he could keep in check the refractory Rajput chiefs. After Iltutmish’s death, a decade of factional struggle was followed by nearly 40 years of stability under Ghiyās̄ al-Dīn Balban, sultan in 1266–87. During this period Delhi remained on the defensive against the Mongols and undertook only precautionary measures against the Rajputs. Under the sultans of the Khaljī dynasty (1290–1320), the Delhi sultanate became an imperial power. ʿAlāʾ al-Dīn (reigned 1296–1316) conquered Gujarat (c. 1297) and the principal fortified places in Rajasthan (1301–12) and reduced to vassalage the principal Hindu kingdoms of southern India (1307–12). His forces also defeated serious Mongol onslaughts by the Chagatais of Transoxania (1297–1306). Muḥammad ibn Tughluq (reigned 1325–51) attempted to set up a Muslim military, administrative, and cultural elite in the Deccan, with a second capital at Daulatabad, but the Deccan Muslim aristocracy threw off the overlordship of Delhi and set up (1347) the Bahmanī sultanate. Muḥammad’s successor, Fīrūz Shah Tughluq (reigned 1351–88), made no attempt to reconquer the Deccan. The power of the Delhi sultanate in north India was shattered by the invasion (1398–99) of Turkic conqueror Timur (Tamerlane), who sacked Delhi itself. Under the Sayyid dynasty (c. 1414–51) the sultanate was reduced to a country power continually contending on an equal footing with other petty Muslim and Hindu principalities. Under the Lodī (Afghan) dynasty (1451–1526), however, with large-scale immigration from Afghanistan, the Delhi sultanate partly recovered its hegemony, until the Mughal leader Bābur destroyed it at the First Battle of Panipat on April 21, 1526. After 15 years of Mughal rule, the Afghan Shēr Shah of Sūr reestablished the sultanate in Delhi, which fell again in 1555 to Bābur’s son and successor, Humāyūn, who died in January 1556. At the Second Battle of Panipat (Nov. 5, 1556), Humāyūn’s son Akbar definitively defeated the Hindu general Hemu, and the sultanate became submerged in the Mughal Empire. The Delhi sultanate made no break with the political traditions of the later Hindu period—namely, that rulers sought paramountcy rather than sovereignty. It never reduced Hindu chiefs to unarmed impotence or established an exclusive claim to allegiance. The sultan was served by a heterogeneous elite of Turks, Afghans, Khaljīs, and Hindu converts; he readily accepted Hindu officials and Hindu vassals. Threatened for long periods with Mongol invasion from the northwest and hampered by indifferent communications, the Delhi sultans perforce left a large discretion to their local governors and officials.

RAJPUT KINGDOMS The Rajputs, (from Sanskrit raja-putra, “son of a king”) are any of about 12 million landowners organized in patrilineal clans and located mainly in central and northern India. They are especially numerous in the historic region of Rajputana (“Land of the Rajputs”) that also included portions of present-day eastern Pakistan.

The Rajputs regard themselves as descendants or members of the Kshatriya (warrior ruling) class, but they actually vary greatly in status, from princely lineages, such as the Guhilot and Kachwaha, to simple cultivators. Most authorities agree that successful claims to Rajput status frequently were made by groups that attained secular power; invaders from central Asia as well as patrician lines of indigenous tribal peoples were probably absorbed in that way. There are numbers of Muslim Rajputs in northwestern India and eastern Pakistan, and Rajputs generally have adopted the custom of purdah (seclusion of women). Their ethos includes an intense pride in ancestry and a mettlesome regard for personal honour. They seek hypergamous marriages (i.e., a bride marrying into a social group higher than her own). The Rajputs’ origins seem to date from a great breakup of Indian society in the northern and northwestern Indian subcontinent under the impact of the Hephthalites (White Huns) and associated tribes from the mid-5th century CE onward. Following the breakup of the Gupta empire (late 6th century), invading groups were probably integrated within the existing society, with the present pattern of northwestern Indian society being the result. Tribal leaders and nobles were accepted as Kshatriyas, the second order of the Hindus, while their followers entered the fourth (Shudra, or cultivating) order to form the basis of tribal castes, such as the Jats, the Gujars, and the Ahirs. Some of the invaders’ priests became Brahmans (the highest-ranking caste). Some indigenous tribes and clans also attained Rajput status, such as the Rathors of Rajputana; the Bhattis of Punjab; and the Chandelas, Paramaras, and Bundelas of central India. Rajput ancestry can be divided between Suryavanshi (“House of the Sun,” or Solar people), or those descended from Rama, the hero of the epic Ramayana; and Chandravanshi (“House of the Moon,” or Lunar people), or those descended from Krishna, the hero of the epic Mahabharata. A third group, Agnikula (“Family of the Fire God”), is the group from which the

Rajputs derive their claim to be Kshatriyas. Rajput habits of eating meat (except beef) and other traits suggest both foreign and aboriginal origins. The Rajputs emerged into political importance as early as the 7th century. From about 800, Rajput dynasties dominated northern India, and the many petty Rajput kingdoms there were among the main obstacles to the complete Muslim domination of Hindu India. In the early 1020s the Rajput rulers at Gwalior and Kalinjar were able to hold off assaults by Maḥmūd of Ghazna (present-day Ghaznī, Afghanistan), although the two cities did pay him tribute. After the Muslim conquest of the eastern Punjab and the Ganges (Ganga) River valley, the Rajputs maintained their independence in the fastnesses of Rajputana and the forests of central India. Sultan ʿAlāʾ al-Dīn Khaljī of Delhi (reigned 1296–1316) took the two great Rajput forts of Chitor and Ranthambhor in eastern Rajputana but could not hold them. The Rajput state of Mewar under Rana Sanga made a bid for supremacy but was defeated by the Mughal emperor Bābur at Khanua (1527).

KHMER The Khmer empire was a powerful state in South East Asia, formed by people of the same name, lasting from 802 CE to 1431 CE. At its peak, the empire covered much of what today is Cambodia, Thailand, Laos, and southern Vietnam. By the 7th century CE, Khmer people inhabited territories along the Mekong river -the world’s seventh longest river - from the delta to roughly the modern Cambodia-Laos border, plus the region between that river and the great Tonle Sap lake to the west and the area running along the Tonle Sap river (which runs from the lake to the sea, joining the Mekong in the delta). There were several kingdoms at constant war against each other, with art and culture heavily influenced by India due to long established sea trade routes with that subcontinent. Hinduism mostly, but Buddhism as well, were important religions in the region, mixed with animist and traditional cults. Important cities from that time include Angkor Borei, Sambor Prei Kuk, Banteay Prei Nokor and Wat Phu. A man called Jayavarman II, who is said to have come from a place named Java - which may or may not be the island we call Java in Southeast Asia, led a series of successful military campaigns, subjugating most of these petty kingdoms, that resulted in the founding of a large territorial state. In 802 CE he took the title chakravartin, “universal ruler”, and that date is used to signal the start of the empire. Using the city of Angkor as capital, for the next centuries the Khmer empire expanded its territorial base, mostly to the north (entering the Khorat plateau) and the west, to the Chao Phraya basin and beyond. To the east outcomes were different: several times the Khmer fought wars against two neighboring peoples with powerful kingdoms, the Cham (in today’s central Vietnam) and the Vietnamese (in today’s northern Vietnam). Despite some victories, as in 1145 CE, when Cham’s capital Vijaya was taken, the empire was never able to annex those lands. Conversely, Chams and Vietnamese enjoyed some victories of their own, the most spectacular of which was Cham’s humiliating revenge, looting Angkor (1177 CE) and pushing the empire to the edge of destruction. Throughout the empire’s history, Khmer’s court was repeatedly concerned with putting down rebellions initiated by ambitious nobles trying to achieve independence, or fighting conspiracies against the king. This was particularly true each time a king died, as successions were usually contested. The Khmer were great builders, filling the landscape with monumental temples, huge reservoirs (called baray) and canals, and laying an extensive road network with all sorts of bridges -the main highways are 800 km long. The most stunning temple, Angkor Wat, is a microcosm of the Hindu universe and defies imagination as the world’s largest religious complex - covering 200 hectares; nowadays it is crowded with tourists amazed with ruins that until recently were covered by the jungle. Its construction took some 30 years and was started by one of the greatest kings, Suryavarman II, around 1122 CE. The empire’s greatest king was Jayavarman VII (r. 1181 CE - 1215 CE). He expelled the Chams who took Angkor, restoring the realm from anarchy, and then invaded Champa (Cham’s kingdom). The scale of his construction programme was unprecedented: he built temples, monuments, highways, a hundred hospitals, and the spectacular Angkor Thom complex - a city within a city in Angkor. Jayavarman also expanded the empire’s territorial control to its zenith.

Angkor Wat, Cambodia

Angkor’s original name was Yashodharapura (“Glory-bearing city”), and at its apogee it was the biggest city in the world, covering an area of a thousand square kilometres, close to that of modern Los Angeles in the USA. Its population is much harder to estimate, but a figure of aproximately one million is acceptable. The Khmer were festive people, with many celebrations all the year round. Wrestling, horse races, cock fights, fireworks, music and dances were an integral part of their culture. Most of the realm’s commerce was apparently in the hands of women.The king and the elite were transported on palanquins, and used umbrellas to cover from the sun. There were several religious beliefs present, with Hinduism being favoured (yet not exclusively) by the the kings at first, and Buddhism later. The state was divided into approximately 23 provinces, with a sophisticated administration and extensive personnel going down even to the village level. Censuses were carried out periodically. Although key to the empire’s prosperity, the high officers of this bureaucracy were also part of the plots that plagued the court’s history. The empire’s decline and final collapse is deeply connected with the great Thai migration of the 12th-14th centuries CE. They inhabitated an area to the north of the empire, roughly where China ends and Southeast Asia begins; the Yunnan. It is a mountainous, harsh land, where a Thai kingdom called Nanchao existed. For unknown reasons, Thai populations started migrating south, in small groups at first. Thais first appear in records as as hired mercenaries for the empire, and their numbers rose as they began to establish themselves as settlers in marginal areas. The migration intensified when Mongol campaigns shook China, and when the Mongols took Yunnan in 1253 CE, further pressure for Thai migration ensued. Eventually the Thai created their own small kingdoms, the most important of them in the western side of the empire. As these kingdoms grew in power, they started to attack and annex imperial territories. The empire’s economy by this time may also have been deteriorated by increased silting of the massive water works that the Khmer core area depended on. The Thai kingdom of Ayutthaya took Angkor in 1431 CE, which constitutes the end of the Khmer empire.

(CNN) — Researchers have identified the elusive ancient "lost city" of Cambodia for the first time, according to a report published Tuesday. In a project that has spanned years, an international group of scientists used aerial laser scans and ground-based surveying to map Mahendraparvata, or the Mountain of Indra, King of the Gods. Mahendraparvata was one of the first capitals in the Khmer Empire, which lasted from the 9th to 15th centuries AD, but much of what we know come from inscriptions recovered from other sites. Scientists theorized that the city was located on the Phnom Kulen plateau, about 48 kilometers (about 30 miles) north of Siem Reap, but it was difficult to find evidence. The plateau was remote, inaccessible, covered with vegetation, and potentially home to landmines installed by the Khmer Rouge regime in the 1970s. Shrouded in mystery for decades, Mahendraparvata has been dubbed the "lost city." Now, scientists say they have identified it for certain. "Here, we confirm the hypothesis, based on this accumulated body of evidence, that Mahendraparvata -- the eighth- to ninth-century AD capital of the Khmer Empire -- was located on the Phnom Kulen massif," said the report, which was published in the journal Antiquity. The researchers used airborne laser scanning that had a "unique ability to 'see through' vegetation and provide high-resolution models of the forest floor," the report said. They had to map the area in two separate operations -- first in 2012, covering about 37 square kilometers (about 9,143 acres), and again in 2015, covering the entire mountain range, an area of 975 square kilometers (240,928 acres). The results of the aerial mapping, along with information collected by field investigations, were then used to create a map that shows the newly discovered main paths and coordinate axes. The map details the location of features like an unfinished reservoir, several dams, the enclosure walls of temples, and even a palace.

A map of the "lost city" of Mahendraparvata in Phnom Kulen, Cambodia.

These discoveries open the door to learning more about the Khmer Empire and the Angkor region. The map shows that the city used urban planning, a "sophisticated hydraulic system," and other innovations, the report said. One striking discovery was that the city was built on linear axes that roughly correspond with the cardinal directions, the report said -- like an early version of the modern city grid system. Prior to that period of time, human settlements in the area had no formal grid, no clear boundaries, and seem to have developed organically without planning -- meaning Mahendraparvata is the first known large grid city in the Khmer world. "The work described here effectively draws to a close 150 years of archaeological mapping work in the Greater Angkor region and sets the stage for more sophisticated spatio-temporal modelling of urban form," the report said. Angkor was the better-known capital of the Khmer Empire, which once governed much of modern-day Thailand, Vietnam, and Laos as well as parts of southern China and Myanmar, and, of course, Cambodia itself.