Across
- 6. standing in NYC,was a gift from France
- 7. a period of severe dust storms that greatly damaged ecology
- 10. wooden-hulled,three masted ship of the U.S. navy
- 12. a national memorial,an icon of freedom
- 13. a concrete arch-gravity dam in the black canyon of Colorado
- 14. led the U.S. in a war against Britain,7th president
- 15. a severe world-wide economic depression in the 1930's
- 17. aka the 9:11,the attacks killed 2,996 people total
- 18. invented,built,and flew the first plane
- 19. known as the Sears Tower,108 story,1,451 ft skyscraper
- 20. a national emblem,emblem of the U.S.,great strength
Down
- 1. thirteen total,on the American Flag,alternating red and white
- 2. oldest masonry fort in the U.S. on the Western Shore
- 3. national park located on Wyoming,established by congress
- 4. symbol of independence it cracked from being rung
- 5. a lighthouse located on Cape Hatteras
- 8. established in 1846 for the increase of knowledge
- 9. a suspension bridge spanning 1m wide and 3m long
- 11. 630 foot monument,completed October 28,1965
- 16. setting of the U.S. congress,building completed in 1800
