31) According to the Dred Scott decision a) all slaves who spent time living in a free state were declared free

b) all persons born in the United States were citizens

c) Congress could legally prohibit slavery where ever it saw fit to do so

d) All of the Above

e) None of the Above​

ok i will try

explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

thanos obviously donald trump aint got nothin on thanos

newly independent countries of the former ussr