The history of Estonia from 1920 to 1939 spanned the interwar period from the end of the Estonian War of Independence until the outbreak of World War II, and covers the years of parliamentary democracy, the Great Depression, and the period of authoritarian rule.
Estonia won the Estonian War of Independence against both Soviet Russia and the German Freikorps and Baltische Landeswehr volunteers. Independence was secured with Tartu Peace Treaty, signed on 2 February 1920.
The first Estonian constitution was adopted by the Constituent Assembly on 15 April 1920. Established as a parliamentary democracy, legislative power was held by a 100-seat parliament or Riigikogu. Executive power was held by a government headed by a State Elder, similar to a Prime Minister, and both answerable to the parliament.
The Republic of Estonia was recognised (de jure) by Finland on 7 July 1920, Poland on 31 December 1920, Argentina on 12 January 1921, by the Western Allies on 26 January 1921 and by India on 22 September 1921. In 1921 Estonia became a full member of the League of Nations and developed successful economic relations with many countries, including the Soviet Union. The backbone of the Estonian economy became agricultural exports to the West, due to tens of thousands of small farm holdings being established as a result of land reforms that ended the Baltic German economic dominance. The Estonian Kroon was introduced in 1928.