Complex sentence: Provisions contained in the Civil Rights Act of 1875 were later reenacted during the Civil Rights Movement in the Civil Rights Act of 1964 and the Civil Rights Act of 1968 relying upon the Commerce Clause contained in of the Constitution of the United States.
Split into simpler sentences: Provisions contained in the Civil Rights Act of 1875 were later passed by Congress during the Civil Rights Movement as part of the Civil Rights Act of 1964 and the Civil Rights Act of 1968. This legislation relied on the Commerce Clause contained in of the Constitution of the United States.