Wallachia
one of the two principalities of southern Europe that were united in 1861 to form the kingdom of Rumania. It is bounded on the N. by Moldavia and Transylvania, on the N.
W. by Hungary, on the W. and S. by the Danube river, separating separating it from Serbia and Bulgaria, and on the E. by the Danube, separating it from Dobrudja; area about 30,000 square miles; capital, Bucharest. Pop. about 4,800,000. See RU- MANIA.