Final answer:
The 1964 Civil Rights Act, Title VII is the important legislation that protected employees against discrimination on the basis of race, color, religion, sex, or national origin.
Step-by-step explanation:
The important legislation that protected employees against discrimination on the basis of race, color, religion, sex, or national origin is the 1964 Civil Rights Act, Title VII. This act, passed by the United States Congress, prohibited employers from discriminating against their employees on the mentioned grounds. It was a landmark legislation in the fight against workplace discrimination and paved the way for equal employment opportunities.
Learn more about Civil Rights Act of 1964