3. List three causes of World War I?
- Nationalism, Imperialism,Militarism, Fromation of alliances
4. How did the U.S. deal with Greman U-boats?
- They had all American ships guarded with military vessels.
5. What was the Selective Service Act used for?
- It required all men to register into the military and that they could be picked to go at any time.
- The tank and the airplane.
- Some people felt that the U.S. should mind there own buisness and others thought it would push the U.S. into anther European war.