What five main events occurred in 1917 that led United States into World War 1?
1. Unrestricted submarine warfare: Germany resumed unrestricted submarine warfare in 1917, sinking numerous American ships including the SS California, resulting in the loss of American lives.
2. Zimmerman Telegram: In February 1917, the British intercepted a telegram from German Foreign Minister Arthur Zimmerman to the German ambassador in Mexico, proposing a military alliance with Mexico against the United States. This telegram further inflamed anti-German sentiment in the United States and contributed to the decision to enter the war.
3. Russian Revolution: The Russian Revolution of 1917 led to the abdication of Tsar Nicholas II and the rise of a provisional government. The overthrow of the Russian monarchy weakened the Allies and created doubts about Russia's commitment to the war effort, prompting the United States to become more involved.
4. Shift in public opinion: As the war continued and reports of German atrocities and aggression circulated, public opinion in the United States began to shift towards intervention. President Woodrow Wilson, who had previously sought to maintain neutrality, faced increasing pressure to enter the war to protect American interests and values.
5. Declaration of war: In April 1917, President Woodrow Wilson asked Congress to declare war on Germany, arguing that the world must be "made safe for democracy." Congress approved the declaration of war on April 6, 1917, officially entering the United States into World War I.