The Coming of the Railroad

2. Invented the Telephone.
5. This natural resource was hunted to near extinction.
7. The railroad gave rise to this type of catalog.
10. This natural resource in places like Wisconsin and Minnesota is a driving factor that led to a construction boom on the Great Plains.
11. First to use the Assembly line in America.
14. Wizard of Menlo Park.
17. Primary workforce of the Central Pacific.
18. Brought an end to the open range and cattle drives.
19. The arrival of new immigrants gave America a surplus of this for industry.
20. Raw material needed for lubrication.
22. Raw material for making steel.
23. Last major engagement between the US Army and Native Americans.

1. First research laboratory in America.
3. He and his men were killed at the Little Bighorn.
4. How many time zones did the railroad establish in America?
6. The belief that the United States would conquer the continent from east to west.
8. One of the two companies building the Transcontinental Railroad.
9. Meeting point of the lines of the Transcontinental Railroad,in Utah.
11. Developed a process for making steel faster and cheaper.
12. Their way of life only lasted twenty years on the Great Plains.
13. Besides money, the Federal government paid the companies building the transcontinental railroad with?
15. Invented Barbed wire.
16. One of the two companies building the Transcontinental Railroad.
21. What issue delayed the Construction of the Transcontinental Railroad?