The argument that the government should not regulate business interests is an example of conservative ideology. liberal ideology. moderate ideology. social conservativism. left-leaning socialism.

I believe it's the example of conservative ideology.
conservative ideology tend to believe the power of the free market. According to this ideology, the Government interventions only reated imbalance in the market competitions, which only drives profit to the people who are not supposed to win the competition.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.