WW1

3. an agreement between countries to support each other in war
4. not taking sides in a war
5. mask a protective mask worn to keep from breathing in poisonous gas
7. long, narrow ditches soldiers fought from during World War I
9. shock the mental and emotional trauma some soldiers suffered after battle
10. man’s land the dangerous area between opposing trenches on a battlefield
11. a German submarine used to attack ships during World War I
13. large powerful guns that fire big shells over long distances

1. limiting how much food or goods people can use, so more can go to soldiers
2. Powers the countries (like Germany, Austria-Hungary, and the Ottoman Empire) that fought against the Allies
3. the countries (like Britain, France, and later the United States) that fought against Germany
6. an agreement to stop fighting in a war
8. a close air battle between enemy airplanes
12. line the area where the actual fighting between armies happens