Which of the following would be the best corresponding cause for the following effect: Congress created and funded NASA, the National Aeronautics and Space Administration.

a
The Soviet Union tested its first powerful hydrogen bomb.
b
The Soviet Union built the first International Space Station.
c
The Soviet Union launched Sputnik, an artificial satellite.
d
The Soviet Union landed on the moon with a manned spacecraft.

mass production/ assembly line production

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.