WW1

3. When a country works to take all the land they can find
6. When multiple countries team up to achieve the same goal
8. A British ship that was blown up by German U-boats
9. An organization made to keep peace after the war
12. Flying vehicles that could have machine guns and bombs attached to them making distance offense easier
14. When two enemies agree to stop fighting
15. When a country works to create a big military to become a strong force

1. Gas that could kill people but ended up causing a little amount of deaths and mostly just scared soldiers
2. A way of spreading war information, spreading nationalism, and villainizing the enemy
4. A submarine that ended up being stopped because they destroyed Lusitania
5. When Germany sent Mexico a message promising American territory in return for help in the war
7. A strategy of fighting used mostly in the Western Front which was about making secret tunnels and pathways which slowed down the war
10. When someone likes their country and believes it is better than others and others are bad
11. A Serbian terrorist group that killed Archduke Franz Ferdinand
13. Land vehicles that could cross through many fields even if barbed or rocky