Europeans were inspired to explore the west coast of Africa because they needed more labor to extract raw materials and resources from the New World, especially in the Caribbean. This led to a sharp increase in slave trading.
The correct answer is the Indian Removal Act of 1830 or also known as the Trail of Tears, wherein it called for the relocation of all the existing Eastern tribes, there are 5 known civilized tribes that were resettled in the present location known as Oklahoma.
1. Thomas Jefferson purchased lousianna territory w/o congress approval
2. Franklin D. Roosevelt expanded the role in the federal gov
3. Lincoln raise an army before congresses approval