Many early principalities were virtually razed or severely affected by a major Mongol invasion in the 13th century, but the lands of modern-day Belarus avoided the brunt of the invasion and eventually joined the Grand Duchy of Lithuania. There are no sources of military seizure, but the annals affirm the alliance and united foreign policy of Polotsk and Lithuania for decades.
Many early principalities were virtually razed or severely affected by a major Mongol invasion in the 13th century, but the lands of modern-day Belarus avoided the brunt of the invasion and eventually joined the Grand Duchy of Lithuania There are no sources of military seizure, but the annals affirm the alliance and united foreign policy of Polotsk and Lithuania for decad.es.