Historical Events May 7 2nd Council of Lyons (14th ecumenical council) opens, convened by Pope Gregory X 1273 History by Year 1275 What Happened in 1274 Spiderman! Web Feat Inspires Woebegone WarriorJuly 11, 1274 Letter from Kublai Khan to the Japanese EmperorOctober 5, 1274
