The development of the factory system in the early 1800's caused -- A, A decrease in free trade between nations
B. An increase in government regulation of businesses
C. An increase in production levels
D. A decrease in immigration

explanation:

boi that sentence trash

hey.

the answer is. b) to protect migrating native american tribes .

and, c) to protect migrating native american tribes .

hope this , if it does, consider marking me brainiest! uwu

i think that the right answer is the aztecs