9. Ireland Declares Itself a Republic (1949)
On April 18, 1949, Ireland officially became a republic, severing its last constitutional ties with the British Crown. This significant move was marked by celebrations across the country, including a 21-gun salute in Dublin. The Republic of Ireland Act 1948, which came into effect on this date, declared the state as the Republic of Ireland and vested executive authority in the President of Ireland (irishcentral.com).
