The significance of the Montgomery Bus Boycott was It led to the end of segregation on buses.

Sparked by Rosa Parks' arrest on December 1, 1955, for refusing to give up her bus seat, the boycott lasted for 381 days, during which African Americans refused to use the city buses. Organized by civil rights leaders, including Martin Luther King Jr., the boycott highlighted the power of nonviolent protest and economic pressure. Ultimately, it resulted in a Supreme Court ruling that declared segregation on public buses unconstitutional, marking a pivotal victory in the Civil Rights Movement.