2. Vasco Nunez de Balboa In 1513 a Spanish military leader or conquistador discovered this stretch part of land between the Atlantic Ocean and the Pacific Ocean

3. U.S.A. and the railroad (1849)

6. Huge Steam Shovels

7. The Culebra cut

8. George Washington Goethals

9. Locks

10. Gates

11. Gatun Dam

12. Gatun Lake

13. Culebra cut

14. Wall to block the sand

15. Gatun Locks

16. Pedro Miguel Locks

17. Miraflores Locks

18. Madden Dam

22. Panama possession (2000)

23. Works Cites http://www.acp.gob.pa/esp/index.html http://www.tfhrc.gov/pubrds/julaug99/topten.htm