crossword

3. German submarine
4. An Italian explorer and navigator who went on sail west
7. Group of merchant ships protected by warships
8. The application of biological research to industry, engineering, and technology
10. Working class
17. Spreading of ideas to promote a cause or to damage an opposing cause.
19. The “draft” which required all young men to be ready for military
20. Large gas filled balloon
21. System in which a group of nations acts as one to preserve the peace of all
23. Agreement to end fighting in the war
24. Channeling of a nations entire resources into a war effort
25. Was the longest serving American president

1. Vital strait connecting the black sea and the Mediterranean Sea in present-day turkey
2. Manmade object that orbits a larger body in space
5. During wartime, military supplies and raw materials needed
6. After World War 1, a territory administered by a western power
9. Payment for war damage
11. An artificial structure built and maintained by a coalition of nations
12. Spread of a disease across a large area, country, or the entire world
13. Horrible act committed against innocent people
14. The highest official of a monarch prime minister
15. Communist party official assigned to the army to teach party principles
16. one who favors extreme changes
18. Council of workers and soldiers set up by Russian revolutionaries in 1917
22. Deadlock in which neither side is able to defeat the other