Hurry 50 points

how did the corps of discovery expedition impact the united states?

it discovered a variety of new plants and animals, which fueled the columbian exchange.

united states citizens realized they could commence working on a transcontinental railroad.

exploration of the black hills of south dakota started the first gold rush to the territory.

the information they brought back was immensely for americans migrating west.

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.