The Irish Rebellion of 1798 led by the United Irishmen against British rule begins.

The Irish Rebellion of 1798 was a major uprising against British rule in Ireland, inspired by the revolutionary ideals of liberty, equality, and fraternity from the American and French Revolutions. Led primarily by the Society of United Irishmen, a republican group that sought to unite Catholics, Protestants, and Dissenters under a common cause, the rebellion aimed to establish an independent Irish republic. Tensions had been simmering for years due to oppressive British policies, religious discrimination, and economic hardship. The rebellion broke out in late May 1798, with violent clashes erupting in counties like Wexford, Antrim, and Down. Despite initial successes—especially in Wexford where rebels briefly held control—the poorly coordinated effort was ultimately crushed by superior British military forces. The rebellion resulted in heavy casualties, brutal reprisals, and a crackdown on Irish nationalist movements. While it failed to achieve its immediate goals, the 1798 Rebellion became a powerful symbol of Irish resistance and helped shape the course of future struggles for independence.