They knew they needed to replace the British government after the war was over, and the Continental Congress suggested that each state write its own constitution.
After the American War of Independence had begun, the Congress asked the 13 original colonies to form governments for themselves, so the colonies began writing and adopting new constitutions to become sovereign and independent states. By 1780, every state had a written constitution. Under the Articles of Confederation, the power of the national government was centered in the Congress. However, the national government was weak and states functioned like independent countries. So, at the 1787 Constitutional Convention, delegates from the different states decided to a plan a stronger federal government with three branches (executive, legislative and judicial) all of equal power. As a result, the US Constitution was signed on September 17, 1787 in Philadelphia.
The primary way that the economy in the south differed from the economy of the north was that the South's economy was almost entirely agricultural and relied heavily on slavery, whereas the economy of the North was almost entirely mercantilist and had very little slavery.
