What asian country was closed to the u. s. for more than 200 years A. China b. Hawaii c. Japan

c. the dred scott v. sandford case,

they both built pyramids.

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.