During the early 1900's, Harlem became a black neighborhood and many of the residents came from the Great Migration which was a migration from the rural South to the urban North and West.
Marcus Garvey was the publisher of the newspaper "negro world" which promoted African culture while Ridgely Torrence, who was a white playwright, featured blacks in his play.
All over the United States, riots and violent attacks broke out because of the increasing tensions between the whites and blacks. This time period was called the "Red Summer" because of the bloodshed caused.
"Shuffle Along" was a play by Eubie Blake and Noble Sissie which opened on Broadway. This play laid the foundation for the "Jazz Age" and a significant point in the Harlem Renaissance.
Armstrong was the first African American major jazz soloist and competed against big name performers. He helped pave the way for following African Americans in the music industry wanting to follow his steps.
In the 20's, this period gave a chance to African Americans to raise awareness to the whites and ultimately led to the Civil Rights Movement. This event has changed our daily lives even today, it is because of this event that we listen to the music we do and the wide variety of genres of music available for us to hear.