According to US historians, the philosophy behind the US was always about diversity, equity and inclusion, especially the postbellum US, when in Reformation the all men are created equal language was clarified as universalist.

All “men”. Indigenous were not considered “men”.

Settlement was tightly restricted beyond the 1763 limits, and claims west of this line, including by Virginia and Massachusetts, were rescinded.[47] With the exception of Virginia and others deprived of rights to western lands, the colonial legislatures agreed on the boundaries but disagreed on where to set them. Many settlers resented the restrictions entirely, and enforcement required permanent garrisons along the frontier, which led to increasingly bitter disputes over who should pay for them.[48]

https://en.wikipedia.org/wiki/American_Revolutionary_War

• Prelude to war
• Taxation legislation

The huge debt incurred by the Seven Years’ War and demands from British taxpayers for cuts in government expenditure meant Parliament expected the colonies to fund their own defense.[48]

The revolution was, in a significant part, over the crown not supporting colonial expansion into indigenous lands.

Almost everything functional from postbellum was hamstrung in the following decades but the language was kept for the good PR. Hence Jim Crow laws.

The rest of your post is on-point 🫡