The Civil Rights Act of 1964 banned public segregation based on race and prohibited employment and workplace discrimination based on race, sex, religion, nationality, or color. This act has led to further legislation to support its implementation on the state and federal level. It has even had an impact internationally. Let's look at this more closely.
On the federal level, the Civil Rights Act of 1964 was followed by the Voting Rights Act of 1965, which banned barriers to voting (like literacy tests) and voting discrimination, and by the Fair Housing Act of 1968, which prohibited property-based discrimination (as when someone buys or rents property).
States had to scurry to change their laws to ensure conformity with the Civil Rights Act of 1964. State laws ensuring equal opportunities in employment are a good example here. States make such laws to ensure that even small businesses are held to nondiscrimination standards. The Minnesota Human Rights Act, for instance, echoes the Civil Rights Act of 1964 and expands the categories of nondiscrimination.
The Civil Rights Act of 1964 has even influenced international law, as equal employment opportunity laws have made other countries examine their own laws against discrimination as well as their immigration laws that determine immigrants' right to work in particular nations.