What were the Upanishads? * philosophy books that questioned the words of the Vedas
social systems followed by the Hindu people
leaders of the Hindu people
philosophy books written before the Vedas were written

the philosophical-religious texts of Hinduism also known as Sanatan Dharma meaning “Eternal Order” or “Eternal Path”  Hinduism is one of the world's oldest religious traditions, and it is founded upon what is often regarded as the oldest surviving text of humanity: the Vedas.

Explanation:

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.