By forming various organizations.
The European Union, for example, unites Europe (Minus Britain these days) under one banner, thus preventing fighting.
A more direct example is the North Atlantic Treaty Organization. NATO protects the "North Atlantic" and Europe from terrorists and invading countries by using the combined military strength of multiple nations.
He believed that man's essential nature was EVIL.
(A quote from an anonymous says : “Over time things change, but some things always stay the same.” From the Era of Foragers, to our Modern Era, our ability to
communicate, organize, create, and destroy have in many ways been altered and also stayed the same. From history we all can now look back and actually see how much things have already been altered, and we can also notice how many things have also remained the same. Some things that will probably always be the same are our race’s ability to be technologically creative. We have an imagination that will virtually never run out, and allows us to always think of new things to change, make, or get rid of to make our lives more convenient. However things that we’re creating or things that we’ve already created are always going to change the way we live.
An amendment to the Constitution must be approved by 3/4 of the states (A). That's why it's so difficult for an amendment to be ratified.
-After promising Ionia, Persians supported construction of Spara military-->attacked Athenian coast
-430 BC- 1/3 Athens population & leader died of plague-->numbers=weakened, disorganized
-Serval Athenian allies joined Sparta-->lost power
