The american breeders association and the eugenics research association broke caucasians into how many different "races."

The kansas-nebraska act allowed the territories of kansas and nebraska to decide the issue of slavery by popular sovereignty. the people who lived in these territories would be able to vote on whether slavery would be allowed there. what effect did this have on kansas? a. settlers voted to allow slavery only in half of the territory. b. kansas became a slave state and joined the confederacy. c. settlers held a series of debates to them decide. d. pro-slavery settlers fought against anti-slavery settlers.

How has the elimination of trade barriers affected the movement of goods among member countries of the european union? a. member countries are able to produce all the goods they need. b. goods can move freely among member countries. c. member countries no longer need to trade with countries outside the eu. d. larger countries are able to import more goods than smaller ones.

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?