Across
- 2. the invention that people can work at night
- 5. 16th amendment
- 10. prevent the spreading of communist
- 11. Nixon's scandal
- 12. having right to vote,especially for women
- 13. 17th amendment
- 14. 18th amendment
- 15. 1st atomic bomb of Mahattan Project
Down
- 1. 24th amendment
- 3. the author of The Jungle
- 4. Japanese's surprise attack
- 6. The event occur during 1914-1918
- 7. this process helped create skyscrapers,railroad...
- 8. the 2nd atomic bomb of Mahattan Project
- 9. the machine break the stalemate