How did the black death effect Europe?" A) Encouraged trade with the Americas
B) It broke down the Feudal System due to the decrease in serf population
C) Encouraged artistic expression
D) It increased the number of serfs working the land

What does washington warn will happen if whites don't work with african americans for the bettering of the south? a. at least 90% of the black population will move to the northern industrial cities. b. the south will experience a new and deadlier "second civil war." c. they will prove to be a "body of death" pulling the south down with ignorance and crime. d. blacks will do it themselves and will bypass the whites in progress and wealth.