Which of the following are ways that the american government tried to change public opinion of the war and limit opposition to american involvement?

The answer would be the first one about the propaganda. I hope this helped you

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.

Johnny johnny yes papa