Why did China discontinue Zheng He’s voyages after Emperor Yongle died? They were believed to be too costly and distracting.
They raised concerns that other nations would see China as threatening.
They brought back too many immigrants for China to take into the country.
They caused too many people to emigrate from China to other parts of the world.

a. factors that are used to make goods and services

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.