Around 1500 b. c.e., which group in middle america (mesoamerica) began developing large cities, including gigantic pyramids?

Mayas is the group in Mesoamerica that started to develop large cities which included huge pyramids in period around 1500 b.c.e. Since this period, they have occupied the triangle of land located along Mexico, Caribbean Sea and the Pacific ocean.Early evidence suggesting that Mayas were builders of structures include Maya temples, carvings and inscriptions.A good example is The Heart of Tikal which was among the Classic Period cities contructed by Maya group.

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.

sorry i cant