According to Marx and Engles, how does the class struggle in 19th century Europe differ from class struggle in previous eras

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.

(d). gave voting rights to free african americans and white women.