The event that marked the beginning of the end for the British Empire in North America was the American Revolution, which began in 1775 and culminated with the signing of the Treaty of Paris in 1783. Tensions had escalated due to British taxation and lack of representation in Parliament, prompting colonies to rebel against British rule. The successful establishment of the United States not only signified the loss of Britain's 13 colonies but also inspired other independence movements worldwide. The revolution ultimately led to a shift in British colonial policy and marked a significant turning point in the decline of the British Empire.