Why did the cost of slave labor double even after the invention of the cotton gin?

a.
the demand for enslaved workers for the cotton fields was high, but the supply of workers was low due to the ban on the slave trade.
b.
northern enslavers refused to sell their enslaved workers.
c.
enslaved workers were in high demand for tobacco and rice farms.
d.
more enslaved workers were being freed at that point so that they could return to africa.

By the end of the 1800s, there was a change in the nature of the immigrants coming to the united states. immigration from northern europe—england, ireland, germany, and scandinavia—declined, while immigration from italy, russia, and austria-hungary grew. in fact, between 1900 and 1910, more than three-fourths of all immigrants came from these three countries. unfortunately, these countries were far removed england, the home of our founders, and the immigrants who came from them had a hard time adjusting to life in their new country.

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec

Which best describes the inspiration for homer’s epic poem, the iliad?