Answer:
In 1941, President Franklin D. Roosevelt delivered a speech which is now famously called Four Freedoms Speech. It had four basic points. These points are liberty of speech, worship, desire and fear.
This speech held a lot of importance, since it sought to better the relationship between Latin Americans and the United States.
To end tyranny, America fought four wars. All of these wars held the same agenda of freedom that is mentioned above.
On the other hand, Martin Luther King wrote an open letter from Birmingham Jail. It was published on June 12, 1963. This letter described the injustices committed against the black people living in America. He explained and defended the non-violent resistance displayed by these black people. He wanted people to break unjust laws and let the government know about their importance in society.