Basarab I vs Orda Khan

Basarab I unified the Romanian lands east of the Olt River and south of the Carpathians, establishing the independent principality of Wallachia. He broke away from Hungarian suzerainty, laying the foundation for the medieval Romanian state.

Basarab was initially recognized as a Hungarian vassal, receiving the title of Voivode from King Charles I. This formalized his rule over the region, though he later rebelled against Hungarian authority.

Basarab I defeated the Hungarian army of King Charles I at the Battle of Posada. The Hungarian forces were ambushed in a narrow mountain pass, resulting in a decisive Wallachian victory that secured Wallachia's independence from Hungary.

After the Battle of Posada, Basarab I extended Wallachian control to the Danube River, including the important fortress of Severin. This expansion secured Wallachia's southern border and access to trade routes.

Orda Khan, as the eldest son of Jochi, inherited the eastern part of the Jochid ulus after his father's death in 1227. He established the White Horde, a semi-autonomous khanate within the Mongol Empire, ruling over the steppes of modern-day Kazakhstan.

Orda Khan led his forces as part of the Mongol invasion of Europe under Batu Khan. He commanded troops in the campaigns against the Rus' principalities, Poland, and Hungary, contributing to the Mongol conquest of Eastern Europe.

After the Mongol withdrawal from Europe in 1242, Orda Khan acknowledged the supremacy of his younger brother Batu Khan, who established the Golden Horde. Orda's White Horde remained a vassal, paying tribute and providing military support.