Answer:
Question 1: To undermine the Central Powers' will to continue, and to inspire the Allies to victory.
Question 2: Woodrow Wilson's plan for world peace included abolishing economic barriers between nations, establishing independence for all nations, open sea travel, and opening diplomacy for all of the world. It failed because the US senate worried that joining the nations together in such a way would sacrifice national sovereignty. Axis powers also rejected his so called "League of Nations" because they still felt confident that they would win the war.