What is the U.S. Constitution, anyway?
The U.S. Constitution was well written initially (in 1787 or 1789), but it is obsolete at least, just like the Declaration of Independence (What is “Declaration of Independence”, anyway?).
After the American Revolution concluded in 1783, America was governed under the Articles of Confederation, which did not work out well. As a result, the first Constitutional Convention was held in 1787, resulting in the birth of the original U.S. Constitution.