The Westward Expansion
Push/Pull to Move West
Push Factor- The land cost to much were you are right now,It's to crowded,and you Need a Job
Pull Factor- there is great Land,there is a lot of gold, and you can have what ever religion you want to have.
The Oregon Territory makes up the pacific northwest, the U.S. and England both claimed Oregon.
Gadsden Purchase is a area below the Mexican cession.The U.S. needed this area to build the southern transcontinental railroad.
Florida/ Spanish cession was purchased by James Monroe in 1819. Purchased after General Andrew Jackson invaded Florida. The U.S. gives up it's claim to the Texas territory.
Texas Annexation was an independent country for 10 years. Annexed in 1845(28th state), Annexation of Texas led to the U.S. - Mexico war.