You know, the world was a different place around the year 1240 ...
A Novgorodian army led by Alexander Nevsky defeats the Swedes in the Battle of the Neva, and heads off to take on the Teutonic knights and the Hungarians.
Mongols under Batu Khan occupy & destroy Kiev and Krakow, continuing the Golden Horde's hold on what became the Russias.
The Catholic Church went through several popes -- Pope Coelestinus IV and Pope Innocentius IV
The Habsburg dynasty began in a very small way in Swabia.
The Aztec dynasty began to consolidate in the New World.
On the plus side, it would be another 90 years or so before the rats and the dreaded bubos would spread across the East and into Europe.