In the south there were a set of laws which prevented African-Americans from voting maintained segregation in restricted many activities for African-Americans what were these laws known as?

These laws were known as Jim Crow laws. Enacted in the late 19th and early 20th centuries, they enforced racial segregation and disenfranchised African Americans by imposing discriminatory practices such as literacy tests, poll taxes, and outright intimidation. The Jim Crow era institutionalized a system of racial inequality that persisted until the Civil Rights Movement of the 1960s.