The greeks spread their cultural and political ideas through the mediterranean mostly by their own citizens moving throughout the mediterranean and establishing colonies. This also lead to increased trade with local people and this the spread of ideas with local people HOPE THIS HELPSSS
Any situation or law that would make the general citizenship think they are being oppressed or unfairly represented by the government, or want more power or more representation, and also in a situation where revolt is not only possible but safe to a point that most people are comfortable with, i.e. The Revolutionary War in the United States.
If you're talking about U. S. A then 44 presidents
They were treated as if they were gods.