Across
- 4. Fighting using underwater boats to sink enemy ships.
- 5. When Britain secretly caught and read Germany’s coded message, it was ______.
- 8. The group of countries during World War I that included Britain, France, and later the United States.
- 9. German submarines used to attack ships during World War I.
- 10. Land that is controlled or owned by a country.
Down
- 1. Germany hoped to keep the ____ out of WWI, but later became their enemy.
- 2. The policy of staying out of a war and not taking sides.
- 3. The group of countries during World War I that included Germany and Austria-Hungary.
- 6. The country that sent the secret telegram promising Mexico land in exchange for help in the war.
- 7. The country Germany asked to join them in a secret alliance against the United States.
