The pure food and drug act and meat inspection act are examples of
progressive reforms to protect consumers
constitutional amendments during the progressive era
progressive reforms to protect laborers
progressive reforms to curb the power of political machines

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

most people were factory or company owners.

it was the shinto. the answer is c.