The government document that served as the colonies' central legal document was the Declaration of Independence in 1776.
It led countries to report to the League of Nations to find support from being conquered and occupied
If by Christian Church you mean Catholic Church(as their was and is the Eastern Orthodox, which historically didn't get along well with Catholics) then the Reformation.
Martin Luther King Jr. believed that the way to achieve racial equality was through doing non-violent protests and marches.