Why did the ability to walk upright and the development of the opposable thumb represent important breakthroughs for early hominids?

Where were the trials to review evidence in cases against high-ranking nazi officials accused of war crimes held?

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.

Why was the agricultural revolution more successful in england than in the rest of europe?