Final answer:
The famous speech at the March on Washington was Martin Luther King Jr.'s 'I Have a Dream' speech, delivered on August 28, 1963, in front of the Lincoln Memorial.
Step-by-step explanation:
The famous speech that took place at the March on Washington was Martin Luther King Jr.'s "I Have a Dream" speech.
King delivered this historic speech on August 28, 1963, in front of the Lincoln Memorial in Washington, D.C. The speech called for an end to racism and emphasized King's vision of a harmonious and integrated society.
The "I Have a Dream" speech is widely regarded as one of the most significant speeches in American history and a pivotal moment in the civil rights movement.