Final answer:
The Memphis massacre and the Tulsa massacre were both fueled by racial tensions and racism, with white populations attacking and killing black residents, destroying their property, and terrorizing others who tried to support them in the aftermath of major societal changes.
Step-by-step explanation:
The Memphis massacre happened during a race riot in Memphis, Tennessee, in 1866. It was a result of white southerners' anger after their defeat in the Civil War and the loss of enslaved people they considered property. They attacked and killed formerly enslaved people, destroyed their property, and terrorized white northerners who tried to improve the lives of freed men and women.
Similarly, the Tulsa massacre of 1921 was triggered by a dubious allegation of assault on a white girl by a black teenager. After a conflict at the courthouse, a riot ensued with white groups pursuing black people into the Greenwood section of the city. This led to the killing of many black residents and the destruction of homes and businesses.
Both of these massacres were fueled by racial tensions, racism, and a desire to maintain control and supremacy by the white population in the aftermath of major societal changes.