After the American Revolution, the United States was now recognized as their own independent and sovereign nation. This means that the US, for the first time in their history, got to develop their own laws, taxes, and system of government.
This was extremely diffierent than the pre-Revolution era. This is because before the revolution, the 13 colonies were under the complete control of Great Britain. The American colonies had to follow British laws and were forced to pay taxes passed by the British parliament.