What events persuaded woodrow wilson to enter the war

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1.WW1 caused the downfall of four monarchies: Germany, Turkey, Austria-Hungary and Russia.

2.The war made people more open to other ideologies, such as the Bolsheviks that came to power in Russia and fascism that triumphed in Italy and even later in Germany.

3.WW1 largely marked the end of colonialism, as the people became more nationalistic and the one country after the other started colonial revolts in Southeast Asia, the Middle East and Africa.

4.The war changed the economical balance of the world, leaving European countries deep in debt and making the U.S. the leading industrial power and creditor in the world.

5.Inflation shot up in most countries and the German economy was highly affected by having to pay for reparations.

Explanation:

Hundreds of thousands of deaths and dozens of countries. Pretty  significant effect on the political and social landscape of the  world.