Made a significant impact on the country and even the world.
Dr. King JR made strides toward freedom to go anywhere with anyone for black people or people that weren’t just plan white
I would write something like this:
As the people of the United States, we write this Constitution to make a stable country so we can ensure fairness, peace, protection, health, and freedom for all Americans.
In 1939 Stalin and hitler make a pact to divide Poland. Nazis attack western and soviet attack eastern
I would say the last one, the colonist were better supplied and had superior training :)