What did eli whitney do to make slavery more profitable? how did this affect the institution of slavery? how many slaves by 1860?

Eli Whitney was the inventor of the cotton gin. While it was true that it reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton. Actually, it increased the amount of slaves and want for land. By 1860, there was an estimate of 4 million slaves.

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.