Historical Events on May 3

23 significant historical events occurred on May 3. May 3 has seen a variety of important historical events. One of the most consequential was the partition of Ireland in 1921, dividing the island into Northern Ireland and Southern Ireland and changing the political geography of the British Isles. On this date, Margaret Thatcher came to power in the 1979 UK general election, Madeleine McCann disappeared in Portugal in 2007, and a Mexico City Metro overpass collapsed in 2021.