What was the main purpose of the Ku Klux Klan during the Reconstruction period?

The main purpose of the Ku Klux Klan during the Reconstruction period was to intimidate and suppress African Americans. Formed in the aftermath of the Civil War, the Klan sought to restore white supremacy in the South and undermined the political and social advancements made by African Americans during this time. They used violence, intimidation, and terror as means to enforce their agenda, targeting not only African Americans but also their white allies, particularly those advocating for civil rights, education, and voting for Black citizens. This tactic of suppression served to maintain the existing racial hierarchy and resist the changes brought about by Reconstruction.

While other choices mention promoting civil rights, providing legal support, or fostering economic recovery, these do not align with the Klan's documented activities and intent during this period. Instead, the Klan’s actions directly countered the efforts made to achieve equality and justice for African Americans, marking a significant and violent backlash against Reconstruction efforts.