The Supreme Court's authority to declare laws unconstitutional—its main function today—is not explicitly mentioned in Article 3. This power of judicial review was established by the Court itself in the early 19th century, fundamentally shaping its role in the U.S. government's balance of powers.

The current conflict between universal rights and ethno-nationalism isn't new; it is a direct resurgence of a counter-narrative crafted in the 1830s by Southern intellectuals who argued that only the Anglo-Saxon race could handle liberty, in order to defend slavery.

Quaker activists opportunistically leveraged the political language of the American Revolution. As colonists argued for their 'natural rights' against British rule, abolitionists like Anthony Benezet co-opted this discourse, pointing out the hypocrisy and applying the same logic to the rights of enslaved people, forcing the issue into the public sphere.

Anti-slavery movements thrived in 'societies with slaves,' like Pennsylvania, rather than 'slave societies,' like Barbados. In Pennsylvania, slavery existed, so people were confronted with its morality, but the economy wasn't dependent on it. This allowed for questioning without risking the collapse of the entire socio-economic order.

The proclamation was not just a moral act but a calculated strategy. By making the war explicitly about ending slavery, Lincoln made it politically impossible for abolitionist nations like Great Britain to support the Confederacy, cutting off their resources.

The "Prize Cases" reveal the legality of Lincoln's naval blockade of the South was a precarious constitutional question. Because blockades are an act of war between nations, his authority was challenged. A 5-4 Supreme Court decision validated his actions, retroactively saving the entire Union war effort from being declared unconstitutional.

Social movements build on one another. The campaign against slavery was not an isolated event; it directly inspired and provided the organizational template for the 19th-century women's rights movement. Similarly, the US Civil Rights movement created the model and momentum for the gay rights movement, showing how progress on one issue makes progress on others more likely.

During the American Revolution, Britain and the colonies used slavery to attack each other's character. Each side accused the other of hypocrisy without any genuine commitment to abolition. This political mud-slinging was crucial because it transformed slavery from a normal fact of life into a blameworthy, immoral act in the public consciousness.

Historian Anne Applebaum observes that significant US constitutional amendments often follow profound national traumas like the Revolution or the Civil War. This suggests that without a similar large-scale crisis, mustering the collective will to address deep-seated issues like systemic corruption is historically difficult, as there is no single moment of reckoning.