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Event · Significance tier 1 · provisional assessment

June 21, 1788

New Hampshire becomes the ninth state to ratify the Constitution

New Hampshire's ratifying convention supplied the ninth approval required by the Constitution's own terms, allowing the proposed federal frame to be put into operation among ratifying states.

Category
constitutional
Episode relations
1
Selection basis
film anchored

Episode coverage

Episode 6

substantial · spoken: caption verified

Visual check: not checked

Why this coverage: The episode explains the nine-state rule, the convention process, opposition, contested ratifications, and the amendments promised to secure the new frame.

Caption entry: 02:00:29.922 · 02:00:32.892 · 02:01:04.257

Why it matters

Ratification made the Philadelphia proposal operative through contested state conventions, promises of amendment, and a procedure that departed from the Articles' unanimity rule.

Why this provisional tier

This tier predates canonical assessment v1. It remains a research hypothesis and must not be used as settled label priority.

The ninth ratification crossed the formal threshold for replacing the Confederation framework, although the legitimacy and reach of the new union still depended on continuing state decisions.

Counterfactual test: Without a ninth state, the Philadelphia Constitution would have remained a proposal; a different ratification sequence or failure by large holdout states could have produced a fragmented union.

The ninth-state threshold was decisive in the Constitution’s own procedure, not the end of ratification politics. Virginia, New York, North Carolina, and Rhode Island remained consequential and contested.

Evidence trail

  • episode-6-srt-local
  • greene-peripheries-and-center
  • nara-constitution-1787
  • taylor-american-revolutions

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