Event · Significance tier 1
Constitutional Convention signs the United States Constitution
Delegates at Philadelphia signed a proposed federal Constitution and sent it into a contested ratification process, replacing neither the Articles of Confederation nor state authority by the act of signing alone.
- Category
- constitutional
- Episode relations
- 2
Episode coverage
Why it matters
The Constitution recast the revolutionary problem of sovereignty by creating a stronger federal government while embedding compromises over representation, federalism, and slavery that would shape the republic's future conflicts.
Why this tier
The proposed frame of government transformed the institutional settlement produced by independence and remains foundational to United States political authority.
Counterfactual test: Without the Philadelphia Constitution—or without its later ratification—the postwar union would have continued under the Articles or pursued a different federal settlement, altering the reach and structure of national power.
Signing did not make the Constitution operative. Ratification conventions, public argument, and the eventual accession of states did that work. The document also protected slavery through representation, fugitive-person, and migration clauses without using the word itself; constitutional achievement and coercive compromise belong in the same account.