most world historians would agree that the key to european predominance in the world economy during the nineteenth and early twentieth centuries was

a

"the land of the dead"

information is crucial for making good decisions

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.