Why is louis armstrong considered a jazz legend
a. for becoming the first white musician to contribute to jazz
b. for his ability to play the trumpet and his subtle sense of improvisation
c. for being the highest-paid african american entertainer
d. for predicting that america will be best remembered for the constitution, baseball, and jazz

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

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.