Final answer:
Both Lyndon B. Johnson and John F. Kennedy made significant contributions to civil rights, but Johnson's presidency saw the passage of the Civil Rights Act of 1964, making him a key figure in advancing civil rights.
Step-by-step explanation:
In terms of civil rights, both Lyndon B. Johnson and John F. Kennedy made significant contributions. Johnson played a key role in getting the Civil Rights Act of 1964 passed, which prohibited discrimination based on race, religion, national origin, and gender. Kennedy, on the other hand, initially proposed the civil rights bill and worked behind the scenes to secure the release of Martin Luther King Jr. after he was sentenced to jail.
While both presidents made important strides, Johnson's presidency saw the actual passage of the Civil Rights Act, which is often considered one of the most important achievements of the civil rights era. Therefore, Johnson may be credited with accomplishing more for civil rights.