Under King Carol I, Romania entered a period of relative stability and rapid economic development focused on infrastructure, such as the national railway system.
: On December 30, 1947 , King Michael was forced to abdicate at gunpoint. The People's Republic of Romania was proclaimed, ending 81 years of Hohenzollern rule and marking the beginning of four decades of Communist rule.
: In 1938, King Carol II abolished the parliamentary system and established a personal dictatorship to counter growing political extremism. România, 1866–1947
Romania initially remained neutral in World War I but joined the (Allies) in 1916 after being promised Transylvania and other territories.
: General Ion Antonescu took power in 1940, forced Carol II to abdicate in favor of his son, King Michael I , and aligned Romania with the Axis powers during the invasion of the Soviet Union. 5. The Fall of the Monarchy (1944–1947) Under King Carol I, Romania entered a period
: Following Carol I's death in 1914, Ferdinand I led the country through the war and was crowned King of all Romanians in 1922. 4. Political Turmoil and the Second World War (1930–1944)
: To counter Russian influence, Carol I secretly joined the Triple Alliance (Germany, Austria-Hungary, and Italy) in 1883. : In 1938, King Carol II abolished the
For a more granular look at the socioeconomic shifts during this period, you may find Keith Hitchins' comprehensive history a valuable resource for further study. Rumania 1866-1947 (Oxford History of Modern Europe)