The landmark legislation passed to ensure the civil rights of all Americans in 1964 is the Civil Rights Act. This comprehensive law aimed to outlaw discrimination based on race, color, religion, sex, or national origin in various aspects of life, including employment and public accommodations. The Civil Rights Act was a significant achievement of the civil rights movement and sought to dismantle systemic inequalities that had persisted for generations. Its passage marked a key moment in American history, reinforcing the government's commitment to protecting the rights of all citizens and paving the way for future legislation aimed at promoting equality.