How did the New Deal change the role of the federal government?

Later, a second New Deal was to evolve; it included union protection programs, the Social Security Act, and programs to aid tenant farmers and migrant workers. ... In the long run, New Deal programs set a precedent for the federal government to play a key role in the economic and social affairs of the nation.Explanation:

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.