The document summarizes the key events and compromises that led to the ratification of the US Constitution in 1788. It describes the weaknesses of the Articles of Confederation revealed by Shay's Rebellion and the calling of the Constitutional Convention. The Great Compromise established representation in Congress as well as compromises around slavery and taxation. The Constitution established three branches of government and a system of checks and balances. It was ratified after approval by 9 states and was later amended, including amendments in the Bill of Rights.