Try reading the Social Contract by Rousseau before making this claim. The Constitution is an idea of Dead White European Males.
The Iroquois had many of these same attributes 200 years prior to Locke and Rousseau.
Equality
Branch System of Government
Sovereignty of Member States
Citizens or Member Elders made government decisions
I agree that many of Locke’s ideas were used, but the Iroquois had the same ideas much earlier.