Why did the use of african slaves increase in the americas during the 1500s?

a.
native americans did not know how to harvest sugar cane.

b.
portuguese colonists needed slaves to labor in their clothing factories.

c.
it was more efficient to import slaves from africa than from other places.

d.
native american populations had declined.

Is this statement true or false? before 1850, workers in american mines, mills, and factories were poorly paid, but their safety on the job was always protected by strict laws.

Question 6 of 27 1 point which of the following best describes the three-fifths compromise at the constitutional convention? o a. no more than three-fifths of a state's population could include slaves. o b. three-fifths of a state's slaves had to be released within 20 years. oc. slaves would be counted as three-fifths of a person when determining representation in congress. od. three-fifths of a state's population had to vote for slavery if a territory was to enter the union as a slave state. g

Which describes a significant different between the north and the south in the year leading up to the civil war