Why do the thirteen english colonies develop similar political systems while maintaining differing social systems?

Today, if you want to learn about the American government, it's pretty simple. Ok, simple may not be the right word, but my point is that the federal government works the same way no matter where you are in the country. Things in Georgia are run pretty much the same way they are in Massachusetts. This was not always the case. Georgia, Massachusetts, and the rest of the original 13 colonies were all under the control of the British Empire, but were operated as independent colonies. This means that each one was set up a little bit different, with different systems of government. And, you thought it was hard to figure out our government now.

Explanation: