How have scientific advances contributed to agricultural production? for brainlliest if 2 people answer

In the early 1900s, the national association for the advancement of colored people strongly urged the federal government to a) punish lynch mobs. b) overturn jim crow laws. c) limit integration. d) limit activist organizations.

To keep other european powers from threatening its empire in america, spain sent soldiers, settlers, and?

How did the us change it’s economy to provide supplies for the war effort?