This is an expression is used by Army leaders. The "know" means that the leaders should be people who will sacrifice and want to learn. They must do this so that they can properly train others.
Answer:
God
Explanation:
He believe his power came from the heavens
Probably. In the 1900's the progressive movement was much more focused on improving lives through the use of science and technology. Today it is more focused on social issues.
The Tyranny is a government is ruled by someone who has seized control, often by illegal means.
hope this helps!! :)
Also, usually if you summarize something, the answer is in the first few or last sentences.