Which of the following was an important development that characterizes the neolithic era? : / : ) any is appreciated.
-a) isolation of communities from outsiders
- b)development of stone weapons and tools
- c)seasonal migration of human populations
- d)development of unequal social classes

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.

is this question from a book? ?