After initial advances the Romanian military campaign quickly turned disastrous for Romania as the Central Powers occupied two-thirds of the country within months, before reaching a stalemate in 1917.
It has an area of 238,391 square kilometres (92,043 sq mi) and a temperate-continental climate.With 19.94 million inhabitants, the country is the seventh most populous member state of the European Union.) is a sovereign state located in Southeastern Europe.It borders the Black Sea, Bulgaria, Ukraine, Hungary, Serbia, and Moldova.Romania was occupied and a harsh peace treaty was signed in May 1918. Total military and civilian losses from 1916 to 1918, within contemporary borders, were estimated at 748,000.
The application of radical agricultural reforms and the passing of a new constitution created a democratic framework and allowed for quick economic growth.
Following the war, Romania became a socialist republic and member of the Warsaw Pact.
After the 1989 Revolution, Romania began a transition back towards democracy and a capitalist market economy.
The Carpathian Mountains, with their tallest peak Moldoveanu at 2,544 m (8,346 ft), cross Romania from the north to the southwest.
Modern Romania emerged within the territories of the ancient Roman province of Dacia, and was formed in 1859 through a personal union of the Danubian Principalities of Moldavia and Wallachia.
By 1541, as with the entire Balkan peninsula and most of Hungary, Moldavia, Wallachia, and Transylvania were under Ottoman suzerainty, preserving partial or full internal autonomy until the mid-19th century (Transylvania until 1711).