What roles did the crisis and the silent protest play in african american history?

They played an important role in history of the civil rights movement, protesting against racial violence and white supremacy in the United States.

Explanation:

Hi, The Silent Protest Was the first mass African-American demonstration of its kind .On the afternoon of Saturday, July 28, 1917, nearly 10,000 African-Americans marched down Fifth Avenue, in silence, to protest against racist violence and the killing of black people.

The Crisis was a monthly magazine put out by an organization that advocated for African-American civil rights. The Crisis presented a mix of news of African-American accomplishment; exposes of southern and northern racism; reports on efforts to improve the political, economic, and social circumstances of African Americans, in an era when this type of news where ignored.

the process of industrialization is called a revolution because