What might be a benefit of natural monopolies, or economies of scale?

1)if a revolution merely replaces one authoritarian ruler with another, is it still a a revolution? a turning point? 2) “the great events of history have a way of defying ideological manipulation”, according to serge schmemann, a pulitzer prize winning journalist. do you agree, why or why not? other thoughts?

In the united state, a system for interaction between unmarried men and woman that casual dating with the purpose of marriage was called

What's the main idea of document 4 in "how democratic was andrew jackson? "