Final answer:
The laws instituted by Southern States during Reconstruction to prevent African Americans from voting and later led to Jim Crow Laws were known as Black Codes.
Step-by-step explanation:
The laws instituted by Southern States during Reconstruction to prevent African Americans from voting and later led to Jim Crow Laws were known as Black Codes. These laws were enacted between 1865 and 1866 and were intended to restrict the rights and freedoms of African Americans, particularly in the South. The Black Codes imposed strict regulations on African Americans' lives, including their ability to vote, own property, and work certain jobs. The restrictions imposed by the Black Codes laid the foundation for the later implementation of Jim Crow Laws, which further enforced racial segregation and discrimination.
Learn more about Black Codes and Jim Crow Laws