How did the original thirteen states join United States?

1. Ratification of the Articles of Confederation (1781-1788):

- The Articles of Confederation, the first constitution of the United States, established a loosely organized central government.

- All thirteen original states (Delaware, Pennsylvania, New Jersey, Georgia, Connecticut, Massachusetts, Maryland, South Carolina, New Hampshire, Virginia, New York, North Carolina, and Rhode Island) had to ratify the Articles for them to take effect.

2. Ratification of the United States Constitution (1787-1790):

- In 1787, delegates from the original states met in Philadelphia to draft a new constitution, which replaced the Articles of Confederation.

- Each state held a ratification convention to vote on whether to adopt the new constitution. The first nine states to ratify the constitution (Delaware, Pennsylvania, New Jersey, Georgia, Connecticut, Massachusetts, Maryland, South Carolina, and New Hampshire) became part of the new union.

- Virginia, New York, North Carolina, and Rhode Island joined later after certain concessions and clarifications were added to the Constitution in the form of the Bill of Rights in 1791.

By 1790, all thirteen original states were officially included as part of the newly formed United States, forming the foundation of the modern American nation.