The main purpose of most spanish expeditions that entered the interior of north america was to a. convert american indians to christianity b. find the seven cities of gold c. trade with american indians d. start new settlements

#1 im pretty sure its a.

what the question i might be able to

c. troops marched forward in close formation against newer, more accurate weapons

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.