In 1936, the Uzbek SSR was enlarged with the addition of the Karakalpak ASSR taken from the Kazakh SSR in the last stages of the national delimitation in the Soviet Union. Further bits and pieces of territory were transferred several times between the Kazakh SSR and the Uzbek SSR after World War II.
In 1936, the Uzbek Soviet Socialist Republic was expanded by incorporating the Karakalpak Autonomous Soviet Socialist Republic from the Kazakh Soviet Socialist Republic during the final stages of national boundary adjustments in the Soviet Union. Subsequent territorial exchanges occurred between the Kazakh and Uzbek SSRs following World War II.