// todo need optimize like in event.jsp. Add indexing or not indexing this page. Mongols take over the Kievan states. (31 déc. 1237 – 19 sept. 1240) (La bande de temps)

Mongols take over the Kievan states. (31 déc. 1237 – 19 sept. 1240)

Description:

In 1237 Mongols took over the area. For more than 150 years, the Mongols reigned supreme. But in the late 1300's Russian princes began two centuries of fighting to kick the Mogols out.