"I have spent my career studying the American Revolution and cannot accept the view that “one of the primary reasons the colonists decided to declare their independence from Britain was because they wanted to protect the institution of slavery.” I don’t know of any colonist who said that they wanted independence in order to preserve their slaves. No colonist expressed alarm that the mother country was out to abolish slavery in 1776. If southerners were concerned about losing their slaves, why didn’t they make efforts to ally with the slaveholding planters in the British West Indies? Perhaps some southern slaveholders were alarmed by news of the Somerset decision, but we don’t have any evidence of that. Besides, that decision was not known in the colonies until the fall of 1772 and by that date the colonists were well along in their drive to independence. Remember, it all started in 1765 with the Stamp Act. The same is true of Dunmore’s proclamation of 1775. It may have tipped the scales for some hesitant Virginia planters, but by then the revolutionary movement was already well along in Virginia.
There is no evidence in 1776 of a rising movement to abolish the Atlantic slave trade, as the 1619 Project erroneously asserts, nor is there any evidence the British government was eager to do so. But even if either were the case, ending the Atlantic slave trade would have been welcomed by the Virginia planters, who already had more slaves than they needed. Indeed, the Virginians in the years following independence took the lead in moving to abolish the despicable international slave trade."