1.
The Revolutionary War
= = > Treaty of Paris 1783
= = > led to the the granting of the Northwest Territory once Britain's
2.
The purchase of the Louisiana Territory for $15 million by Andrew Jackson (wasn't allowed to make the purchase), it doubled the size of the US.
3.
The set up on Mexico by President Polk
= = > Mexican - American War
= = > California, Mexico City, Arizona, and more ceded from Mexico
