Wallachia

Wallachia was founded as a principality in the 14th century by Basarab I after a rebellion against Charles I of Hungary.

In 1859, Wallachia united with Moldavia to form the United Principalities of Moldova and Wallachia. it offically became the Kingdom of Romania in 1881. following the collapse of the Austro-Hungarian Empire, Bukovina, Transylvania and parts of Banat, Crișana, and Maramureș were given to the Kingdom of Romania, thereby forming the modern Romanian state.