Developed the strategy of nonviolence as a way to bring about
change
Kwame Nkrumah
Martin Luther King, Jr.
Mohandas Gandhi
Nelson Mandela
d.

Mohandas Gandhi

Explanation:

Gandhi believed in non violence and would partake in fasts and protests where the participants would sit but not use violence against those who tried to stop them.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

increase in population