history help needed?

[[C:]

1. World War I began after the assassination of
President Woodrow Wilson.
Vladimir Lenin.
Archduke Franz Ferdinand.
Gavrilo Princip.

2. What country was one of the Central Powers?
France
Germany
Italy
Japan

3. To gain support of Americans, both the Allies and the Central Powers used
nationalism.
propaganda.
reparations.
militarism.

4. What country never signed the Treaty of Versailles?
United States
Germany
Great Britain
France

5. What amendment ended Prohibition?
Eighteenth Amendment
Nineteenth Amendment
Twentieth Amendment
Twenty-first Amendment