Answer:
it is D
Explanation:
Hunley, byname Hunley, Confederate submarine that operated (1863–64) during the American Civil War and was the first submarine to sink (1864) an enemy ship, the Union vessel Housatonic. The Hunley in a water tank at the Warren Lasch Conservation Center, North Charleston, South Carolina.
the answer to that is false
On the most basic level, the ancient river valley civilizations influenced classical empires because they influenced civilization, period. The river valley civilizations are the most lasting and historically attested instance of the greater phenomenon of humans moving from a nomadic lifestyle based on hunting and herding to a sedentary one based on agriculture.
They moved to escape religious discrimination, so they could practice their beliefs safely.
Should seem pretty obvious but the traders gained goods from their trade which is a benefit and slaves being slaves, suffered.