Much of the evidence we have on early humans comes from
homo erectus
neanderthals
cro-magnon

Much of the evidence we have on early humas comes from Cro-Magnon.

Explanation:

The Cromagnons are prehistoric people (Homo sapiens sapiens) from the Upper Paleolithic period, whose fossils were found in France, near the Cromagnon Cave (by which they were named). The oldest known remains of chromagnons are radiometrically dated to 35,000 years ago. As for their time, they were quite advanced, they could speak, they were engaged in painting, and they buried members of their community.

answer: the correct answer is d. a christian revivalist movement in the u.s. during the early 19th century

explanation: the second great awakening was lead by the preachers of baptist and methodist congregations in order to gain support for the protestant religion from the 1790's to 1840's

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.