D. With its dramatic turnout and powerful speeches, the march helped to increase pressure on political leaders to support federal civil rights legislation.
The March on Washington for Jobs and Freedom in 1963 was a pivotal moment in the civil rights movement, showcasing the demand for civil and economic rights for African Americans. The event, which included Martin Luther King Jr.'s iconic "I Have a Dream" speech, significantly raised awareness and support for civil rights issues, ultimately influencing legislation such as the Civil Rights Act of 1964 and the Voting Rights Act of 1965.