How did the federal government change? and why?

By the new deal that emerged during the Great Depression marked a profound shift in the role of the federal government in domestic policy. Up until that time, federal government spending was primarily directed towards the military. What little domestic welfare existed put almost entirely in the hands of the states and private charity.

because to save capitalism, the federal government under Franklin Delano Roosevelt intervened with a myriad of programs to help people. These included the government hiring of the unemployed through programs such as the Civilian Conservation Corps and the Work Project Administration. The FDR administration fought for and passed the Social Security Act, minimum wage laws, the forty hour work.

Millatary capacity build was higher level