1245
John of Plano Carpini rides to Karakorum
A grey-bearded Franciscan friar, commissioned by the pope to open diplomacy with the Mongols, set out across the steppes. He reached the camp of the new khan Guyuk, endured its cold and smoke, and brought back the first detailed European account of Mongol customs. His journey of fifteen thousand miles on horseback, completed at nearly sixty years of age, remains one of the great feats of medieval travel.
Zimbabwe builders raise early stone walls
On the granite plateau of southeastern Africa, Shona-speaking communities began raising the mortarless stone walls that would grow into Great Zimbabwe. Cattle wealth and control of the gold trade to the Swahili coast underwrote a new monumental culture. The builders fitted granite blocks together with such precision that no mortar was needed, their dry-stone technique achieving curves and enclosures of remarkable sophistication.
First Council of Lyon deposes Frederick II
Pope Innocent IV, in exile from Italy, convened a council that declared the Hohenstaufen emperor deposed for tyranny, heresy, and perjury. Frederick laughed and kept ruling. The breach between empire and papacy widened into an abyss that would outlive both men. The council's sweeping claims of papal supremacy over temporal rulers pushed the theoretical reach of the medieval papacy to its absolute limit.
Innocent IV issues Eger Cui Lenia against Frederick II
From exile in Lyon, the pope launched a propaganda war against the Hohenstaufen emperor, accusing him of heresy, blasphemy, and consorting with Saracens. The pope's agents fanned rebellion across Italy and Germany, demonstrating that a pope without armies could still wound an emperor with ink. The pamphlet war between papacy and empire produced some of the most sophisticated political rhetoric of the medieval period.