How did totalitarian governments use surveillance and propaganda to establish power over a nation?

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.

What do you think should be the most important factor in president considered when picking a supreme court justice

Who believed that the best economic system was on in which businesses compete to gain profit with minimal or no government control