Four major land reforms have taken place in Romania: in 1864, 1921, 1945 and 1991. The first sought to undo the feudal structure that had persisted after the unification of the Danubian Principalities in 1859; the second, more drastic reform, tried to resolve lingering peasant discontent and create social harmony after the upheaval of World War I and extensive territorial expansion; the third, imposed by a mainly Communist government, did away with the remaining influence of the landed aristocracy but was itself soon undone by collectivisation (considered by some as yet another land reform), which the fourth then unravelled, leading to almost universal private ownership of land today.
The 1864 land reform was the first of its kind in Romania, taking place during the reign of Alexandru Ioan Cuza. It came on the heels of the secularization of monastery estates, achieved in December 1863 on Mihail Kogălniceanu's initiative and taking over a quarter of the country's area away from the Orthodox Church. The question of land reform was an essential point of Cuza's political programme, and he and Kogălniceanu had wider aims: the abolition of compulsory labour and the establishment of private small holdings. Conservative landowners expressed opposition in Parliament, leading to a bitter political struggle culminating in its dissolution in the coup of 2 May 1864. The draft law was written by the Council of State, amended by the Government and promulgated by the prince on 14/26 August 1864. His proclamation announced to the peasants: "The corvée is forever abolished and you are henceforth free proprietors in the places subjected to your control". The law freed peasants from feudal tasks: the corvée, the tithe, the transport tax and maintenance days; it did away with feudal monopolies in the villages, at the same time specifying that compensation would be paid to the owners.
Thus, for 15 years, in order to defray the cost of their no longer performing the corvée and the other feudal duties, peasants were required to pay into an indemnity fund that issued bonds redeemable in instalments an annual fee of 51-133 lei, depending on their category and region; this was a heavy burden for the majority and ruined the poorest. They also had to pay for the land they now owned, albeit at a price below market value. The quantity of expropriated land was not to exceed ⅔ of the domains' area (the boyars kept the best third, taking advantage of a provision calling for the consolidation, wherever possible, of pastures, hayfields and arable plots scattered by successive inheritances in order to get rid of their poorest quality land) and selling or mortgaging the lots was forbidden for 30 years, after which the village commune could exercise its right of pre-emption. This reform gave 1,654,965 ha (6,389.86 mi²) of land to 406,429 peasants; another 60,651 received lots only for a house and garden. Later, 48,432 additional families of newlyweds (who did not come under the law's provisions but were permitted to settle on state-owned lands near their village) received 228,329 hectares. Implementation of the law was by and large complete by 1865 but was slowed by a lack of comprehensive regulations concerning both general procedures and special cases; moreover, friction between landlords and peasants ensued because the latter had no confidence in the private surveyors hired by landlords to delimit their new holdings from the rest of the estate. In the year following 1864, agricultural production stagnated or even fell in some regions, partly because many owners had done nothing to compensate for the loss of the corvée, and also because many peasants did not know what land would be theirs and were reluctant to raise crops that might not be theirs, but by the spring of 1866 production once again rose. After the reform, land owned by peasants (that is, former corvée members, free peasants and small proprietors) covered around 30% of the national territory, with 70% still in state or landlord hands. The reform had important social consequences, giving the peasants a civic motivation and assuring them a means of subsistence; it was also enshrined in the 1866 Constitution.