What social class is defined as the "Industrial Working Class"?

a social class comprising those who do manual labor or work for wages; "there is a shortage of skilled labor in this field"

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.