The founders of the United States didn't expect future generations - or even their contemporary - to understand why things are the way they are, so they *explained it*.
It's called the Federalist Papers.
Please read them.
美国的开国元勋们并不期望子孙后代，甚至是他们的同龄人，能够理解为什么事情是这样的，所以他们*解释了它*。
这叫做联邦党人文件。
请阅读。