The Red Summer refers to the summer and early autumn of 1919, which was marked by hundreds of deaths and higher casualties across the United States, as a result of racial riots that occurred in more than three dozen cities and one rural county. In most instances, whites attacked African Americans.
The Jim Crow era directly followed the Reconstruction period in the United States history. The name Jim Crow comes from a white actor who portrayed a dim witted black slave in the 1830's. Jim Crow is used to describe segregation laws, customs, etc.
Answer:
Cuba, Haiti and the Dominican Republic were very important for the emerging American power in the Caribbean because they were territories formerly in the possession of the European powers (Spain and France), which once independent limited the power of these nations in the region.
Thus, the fact that Cuba, Haiti and the Dominican Republic were constituted as independent nations caused the European colonial powers to lose weight in the Caribbean Sea, leaving a power vacuum that was used by the United States to establish itself as the main power of the region.