WWI- American Helps the Allies

Section 2 “America Tips the Power Balance”

Guess what these are for

QuickTime™ and a decompressor

are needed to see this picture.

Reasons why the U.S. became involved… Britain makes a blockade of the North Sea

American ships could not sell to Germany •Famine in Germany

Germany has a counter blockade with U-Boats Total submarine warfare- policy of sinking all ships

Sinking of the Lusitania & several other U.S. ships

Zimmerman Note Germany tells Mexico to attack the U.S. & they will support them in action against the U.S. to regain lost territory

Reasons why the U.S. became involved… Russian Revolution

Russia replaces their monarchy with a communist government

Russia with drawls from the war-- signs a peace treaty with Germany

Now Germany can focus on only one front Signs a peace treaty with Germany

• Now it is a war of democracies against monarchies

Wilson’s Declaration of War Why does he ask congress for a declaration of war against Germany? Germany is sinking ALL ships-- waging war against all nations

We need to defend our rights-- Democracy & Freedom

What was the U.S. up against? Trench warfare -- Europeans have been fighting for 3 years already and are weakening

New war technology- cause high casualties and horrific injuries

QuickTime™ and a decompressor

are needed to see this picture.

New war technology

Airplanes Tanks Machine Guns

Poison Gas Chlorine fog

Guess what these are for

QuickTime™ and a decompressor

are needed to see this picture.

Airplanes in WWI

QuickTime™ and a decompressor

are needed to see this picture.

QuickTime™ and a decompressor

are needed to see this picture.

QuickTime™ and a decompressor

are needed to see this picture.

Psychology of War What does war do to soldiers Physically and mentally? Shell Shock --Post Traumatic Stress Syndrome http://www.youtube.com/watch?v=SS1dO0JC2EE

http://www.youtube.com/watch?v=RRv56gsqkzs&feature=related

How does the U.S. help the Allies win the war? Raising an Army

Selective Service Act- the Draft Propaganda- fear, guilt, hatred

Increasing naval strength U.S. Navy weakens German U-Boat campaign •Convoy system-- U.S. gets 2 million troops to Europe with few casualties

Why did Wilson and John J. Pershing want the U.S. troops to be kept separate from the European troops?

So they could be distinguished from the Europeans

So the U.S. could have a significant part of the peace talks and treaty process at the end of the war.

How does the U.S. army help win the war? 1 Million U.S. arrive in Europe American soldiers boost moral

Freshness and enthusiasm American Soldiers go on the offensive--ATTACK!

Prove themselves in battle- Great victories

Germans retreat by November 1918 Armistice- truce to end the war