Why did the Chesapeake-Leopard affair nearly lead to war?

The Chesapeake-Leopard affair of 1807 nearly led to war because it was a flagrant violation of American sovereignty and a provocative escalation of the British policy of impressment.

During this incident, the British frigate H.M.S. Leopard fired upon the U.S. Navy frigate Chesapeake and forcibly seized four sailors, three of whom were U.S. citizens. This act of violence, in which the Royal Navy accosted a national warship to remove alleged deserters, outraged the American public and intensified existing tensions regarding maritime rights. While the British government eventually issued an apology, the event served as a critical flashpoint that highlighted the disregard for American neutral rights and contributed significantly to the diplomatic deterioration that ultimately culminated in the War of 1812.12