Northern portion of the Louisiana purchase and the Oregon territory
ITS C.
“the circular flow of income between the household sector and the business sector.” - explanation to back it up!
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.
Its D - Most africans being transported to the US would likely die on the ships because of the extremely poor conditions before they even reached their deplorable fate.
hope this helps :)