Which one of the following is least related to the other four?

Question

Quizplus · Accepted Answer

Scalawags, Carpetbaggers, Freedmen, and Union League are all related to the Reconstruction era in the United States following the Civil War. They each represent different groups or organizations involved in the political and social changes that occurred during this time. The Ku Klux Klan, while also active during Reconstruction, represents a reactionary and violent opposition to these changes, rather than a participant in them.

Which One of the Following Is Least Related to the Other