War in Europe

5. became common on the Western Front, leading to a long and brutal stalemate.
6. lived in harsh conditions in trenches, facing disease, mud, and constant danger.
7. proposed an alliance between Germany and Mexico against the United States.
8. the United States declared war on Germany.
11. including unrestricted submarine warfare, threatened American ships and lives
13. helped boost Allied morale and strength.
14. was more fluid than the Western Front, with fewer trenches and more movement.
15. were known as the American Expeditionary Force (AEF).

1. created a military draft to build the armed forces.
2. limited submarine warfare after the Sussex Pledge.
3. and trade increasingly linked the United States to the Allied Powers
4. Pershing commanded American forces in Europe.
9. of the war was the assassination of Archduke Franz Ferdinand of Austria-Hungary.
10. began in Europe in 1914 after rising nationalism, militarism, imperialism, and the formation of alliances.
12. British Empire, France, Russia.