What did president lyndon johnson do during the march from selma to montgomery?

President Lyndon Johnson made a speech titled, ''The American Promise'' on 15th March 1965.

Explanation:

The Selma to Montgomery marches commenced on Mar 7, 1965. On 15th March 1965, President Lyndon Johnson convened a joint session of Congress, outlined his new voting rights bill, and demanded that they pass it. He made a speech on live television in which he showed support to the civil rights movement. Johnson's voting rights bill was formally introduced in Congress two days later.