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The United States Enters the War

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1 The United States Enters the War
 Chapter 23 Section 3 World War II Erupts Riddlebarger

2 Isolationism- a policy in which a nation avoids entanglement in foreign war.
Intervention- To interfere, usually through force or threat of force, in the affairs of another nation.

3 Why was a commitment to isolationism so widespread in 1930’s America?
How did FDR balance American isolationism with the need to intervene in war? What did the United States do to prepare for war in & 1941? What were the causes and effects of the Japanese attack on Pearl Harbor?

4 American Isolationism
Many Americans questioned the benefit of our involvement in World War I Isolationism movement in between war. Charles Lindbergh & America First Desire to avoid involvement in foreign wars. Greek god who warned of Trojan horse being false. Subjected to divine execution by 2 serpents sent after him.

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6 Neutrality FDR is no isolationist
Had supported entry into League of Nations. Congress passes Neutrality Act (1935) Illegal for US to aid warring nations.

7 Neutrality Act 1935 “Upon the outbreak or during the progress of war between, or among, two or more foreign states…it shall thereafter be unlawful to export arms, ammunition, or [tools] of war to any port of such [warring] states.” FDR “The peace, the freedom, and the security of 90 percent of the population of the world is being jeopardized by the remaining 10 percent who are threatening a breakdown of all international law and order.”

8 Balancing Isolationism & Intervention
While most Americans are focusing on their own problems (still in Depression), overseas, events are taking a bad turn. Italian invasion of Ethiopia, German & Japanese aggression. FDR is disturbed by these actions but is afraid to take a stronger stance and anger those who want to remain neutral.

9 Preparing For War FDR gains Congressional approval for building new naval vessels in 1938. After Hitler invaded Poland, Neutrality laws are changed Cash and Carry allows US to sell arms to countries at war FDR hoped it would help Allies fight Hitler US trades old warships for British bases. Quarantine Speech:

10 Election of 1940 FDR decides to run for a third term
Feels world situation requires experience in the White House. His opponent in Wendell Willkie who has similar views on foreign policy. Easy win for FDR.

11 Lend-Lease Act Passage of Lend-Lease Act brings U.S. closer to war
Allows President to lend or lease military supplies to any nation deemed “vital to defense of the U.S.” FDR: US must be “arsenal of democracy.” Economically, US is at war with Germany German u-boats hunt British & American supply ships. Tens of thousands of tons sent to ocean’s bottom. Convoy System Sonar Extended to Soviet Union after German invasion.

12 Convoy System Fanned shape area of escorts indicates radar range
Speedier escorts sailed back and forth along the perimeter of the convoy, like sheep dogs guarding the flock Area of merchant ships is approximately 5 miles wide Most valuable cargo (planes, troops, fuel, etc.) was centered in the middle of the convoy

13 Atlantic Charter August 1941: FDR and Churchill meet
Agree to Atlantic Charter Proclaims shared goals in opposing Hitler & his allies. Isolationist fear these things are leading us to war. wiki

14 Japanese Aggression

15 Pearl Harbor While the situation in Europe troubles many Americans, a bigger threat was brewing in the Pacific Ocean. While Americans negotiate with Japanese, tensions are growing.

16 Japan attacks Pearl Harbor
Japanese developed plans for months. US suspected attack on bases in Philipines. Pearl Harbor is home to US Naval Pacific fleet Attack comes on morning of December 7,

17 A Day Which Will Live In Infamy
Raid is a complete surprise. Attack lasts barely two hours Most US fighter planes never got off ground. Destruction is enormous to US Japan lost little.

18 Aftermath All wiki: top left: USS Arizona; top right: USS Shaw; bottom left: planes burning on Ford Island

19 FDR signs Declaration of War with Japan- December 8, 1941
“A Day Which Will Live In Infamy.”

20 American Reaction Anger and fear from Americans
Attack unites Americans behind war 3 days later, Germany & Italy declare war on US

21 Pearl Harbor Memorial

22 Dark Green- Allies before Pearl Harbor
Light Green- Allied countries that entered World War II after Pearl Harbor Blue- Axis Powers Gray- Neutral


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