The correct answer is - Americans moved west in the 1800's because people wanted to get a fresh start and wanted to be able to buy their own land, as well as to try new economic possibilities, such as farming and gold mining.
In the 1800's the situation in the west started to stabilize and be much more attractive for people to move in. The problems with the native American populations were almost totally put under control so the safety issue was mostly resolved. Also the government had policies to give free land or for very small amount of money as to attract people to move there and thus have the demographic basis for implementing their rule more efficiently. For lots of people, mostly the ones from the lower class, this was seen as a golden opportunity and they used it as quick as possible.
Large body of water located between the coastline and an island
Large body of water located between the coastline and island(s). Narrow body of water between two larger bodies of water. Small river that runs into a larger river. Land at a low elevation located between two hills or mountains.
Extention to Europe
I think
