Chart of first Czechoslovak Republic - Ethnic groups population by region

In the agricultural sector, a program of reform introduced soon after the establishment of the republic was intended to rectify the unequal distribution of land. One-third of all agricultural land and forests belonged to a few aristocratic landowners—mostly Germans (or Germanized Czechs – e.g. Kinsky, Czernin or Kaunitz) and Hungarians—and the Roman Catholic Church. Half of all holdings were under 20,000 m². The Land Control Act of April 1919 called for the expropriation of all estates exceeding 1.5 square kilometres of arable land or 2.5 square kilometres of land in general (5 square kilometres to be the absolute maximum). Redistribution was to proceed on a gradual basis; owners would continue in possession in the interim, and compensation was offered.

Reference 1: Bohemia, Moravia, Silesia, Slovakia, Carpathian Ruthenia and Czechoslovak Republic.

Reference 2: "Czechoslovaks" (Czechs and Slovaks), Germans, Hungarians, Rusyns, Jews, Others and Total.

Source: http://en.wikipedia.org/wiki/First_Czechoslovak_Republic