Answer:
The objective of the first five-year plan (1928-1932) was to lift the heavy industry of the USSR without resorting to the help of foreign countries. But the USSR continued to be an agrarian country, so an important agrarian reform had to be carried out beforehand.
The collectivization of the land, provided for the formation of collective farms that would be considered property of the peasants. This collectivization provoked conflicts between the state and the peasant proprietors especially, average owners (kuláks), but in the end the state prevailed through violence. Thousands of kulaks were deported to labor camps, with sentences of up to 10 years. Many peasants were killed during these conflicts so they preferred to sacrifice their animals, which helped to work the land, and set their crops on fire instead of handing them over to the state. This generated deep famines and epidemics.
In spite of everything, agriculture was for a long time the weakest sector of the Soviet economy. Parallel to the collectivization of the land, there was a rapid process of industrialization, also planned in the plan.
