Across
- 1. The use of U-Boats in war
- 7. Mustard or chlorine gas
- 8. Build up of weapons
- 10. An agreement between countries to fight together
- 11. Posters to influence citizens to help with the war
- 12. Main style of fighting in World War 1
Down
- 2. The use of planes to fight in war
- 3. Assassinated because he was a threat to Serbian Independence
- 4. Empire set off the start of World War 1
- 5. Extreme pride for ones country
- 6. Money you lend to the government to support the war
- 9. Dominant countries expanding their power