What is Martin Luther King, Jr. famous for?

Martin Luther King, Jr. is renowned for his pivotal role in the civil rights movement during the 1950s and 1960s in the United States. He advocated for nonviolent resistance as a means to combat racial segregation and discrimination against African Americans. His leadership during significant events, such as the Montgomery Bus Boycott and the March on Washington, helped raise awareness and support for civil rights legislation.

King's famous "I Have a Dream" speech, delivered during the 1963 March on Washington for Jobs and Freedom, articulated his vision of a racially integrated and harmonious America. His efforts were instrumental in the advancement of civil rights laws, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965. The impact of his work continues to resonate in ongoing movements for social justice and equality.

The other choices do not accurately represent King’s legacy. While environmental causes, educational programs, and contributions to the space race are significant topics, they are not associated with Martin Luther King, Jr.’s key contributions and achievements in American history.