The Soviet Union enforced the collectivization of its agricultural sector between 1928 and 1940 during the ascendancy of Joseph Stalin. It began during and was part of the first five-year plan. The policy aimed to consolidate individual landholdings and labour into collective farms: mainly kolkhozy and sovkhozy. The Soviet leadership confidently expected that the replacement of individual peasant farms by collective ones would immediately increase the food supply for the urban population, the supply of raw materials for processing industry, and agricultural exports. Planners regarded collectivization as the solution to the crisis of agricultural distribution (mainly in grain deliveries) that had developed from 1927. This problem became more acute as the Soviet Union pressed ahead with its ambitious industrialization program.
In the early 1930s over 91% of agricultural land became "collectivized" as rural households entered collective farms with their land, livestock, and other assets. The sweeping collectivization often involved tremendous human and social costs.
After the emancipation of the serfs in 1861, peasants gained control of about half of the land they had previously cultivated, and began to ask for the redistribution of all land. The Stolypin agricultural reforms between 1905 and 1914 gave incentives for the creation of large farms, but these ended during World War I. The Russian Provisional Government accomplished little during the difficult World War I months, though Russian leaders continued to promise redistribution. Peasants began to turn against the Provisional Government and organized themselves into land committees, which together with the traditional peasant communes became a powerful force of opposition. When Vladimir Lenin returned to Russia on April 16, 1917, he promised the people "Peace, Land and Bread," the latter two appearing as a promise to the peasants for the redistribution of confiscated land and a fair share of food for every worker respectively.