The main way in which popular sovereignty applied to federalism is that it allowed settlers of new land to determine whether this new territory would be "slave" or "free", meaning that the states a large amount of power as well as the federal government.
The concept of the separation of powers, as articulated by the framers of the Constitution, refers to the "<span>organization of the national government in three branches". This is to create "checks and balances" on power. </span>
<span>Pericles.
The above quote is from a much larger piece of writing in which Pericles is delivering the eulogy for lost Athenian soldiers during the battle of Megaris. He continues to note that all should be equal in the eyes of the law, and that the needs of the many outweigh the needs of the few at length.
The speech is documented in "History of the Peloponnesian War" by Thucydides.</span>