Wallachia(redirected from Bulgarian-Vlach Kingdom)
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, historic region (29,568 sq mi/76,581 sq km), S Romania. The Transylvanian Alps separate it in the NW from Transylvania and the Banat; the Danube separates it from Serbia in the west, Bulgaria in the south, and N Dobruja in the east; in the
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a former principality of SE Europe: a vassal state of the Ottoman Empire from the 15th century until its union with Moldavia in 1859, subsequently forming present-day Romania