Which Civil Rights leader was best known for preaching nonviolent disobedience to unjust laws?

Martin Luther King Jr

Explanation:

Martin Luther King Jr. was a Baptist minister and a leader of the American civil-rights movement. He was awarded the Nobel Peace Prize in 1964 for employing nonviolent civil disobedience to advance racial equality.

The civil rights movement used methods from all three classes, but those most commonly included were "nonviolent direct action"-a synonym for nonviolent struggle or nonviolent resistance, which generally referred to protest and persuasion methods to gain blacks access to segregated public facilities-and voter

A major factor in the success of the movement was the strategy of protesting for equal rights without using violence ... Led by King, millions of blacks took to the streets for peaceful protests as well as acts of civil disobedience and economic boycotts in what some leaders describe as America's second civil war.