Final answer:
The Civil Rights Act of 1964 extended federal civil rights protections to all citizens.
Step-by-step explanation:
The law that extended federal civil rights protections to all citizens is the Civil Rights Act of 1964. This landmark legislation was signed into law by President Lyndon B. Johnson and aimed to end racial discrimination in various areas, including public accommodations, employment, and voting rights. It also created the Equal Employment Opportunity Commission (EEOC) to enforce the provisions of the Act.
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