Why did thomas jefferson believe that american expansion west was vital to the future of the us

As these lands became crowded, people needed more land and the obvious place to expand was to the west. Thomas Jefferson wanted to buy the settlement of New Orleans from the French. It was a major seaport that was fed from the Mississippi River, making it important to many American businesses.

a.that is my answer.

brainliest .

the answer would be:

b. race