The march 1917 revolution in russia began when a. taxpayers were angered over tax increases to pay for the war b. military leaders refused to obey the czar c. people in the cities demonstrated over food shortages d. subject ethnic groups in the empire started nationalist uprisings

C. People in the cities demonstrated over food shortages.

fwe43 uigfegiufiuwggiufwiugfew fgewugfewugguefw guifewgiufewgi answer 1935

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.