Answer:
McCormick's reaper ensured that raising wheat would remain the main economic activity in the Midwest. New machines and new improvements in transportation helped farmers plant more acres of cash crops, crops planted strictly for sale. hope this helped
overcome the suffering that is a natural part of human life. Apex
Us victory in the mexican american war in 1848
I think the correct answer is...
<em>D) Defended the rights of Native Americans.</em>