Poland was the first country to be occupied by the Soviet Union during World War II. The secret protocol of the Molotov–Ribbentrop pact stipulated Poland to be split between Soviet Union and Nazi Germany. In 1939, the total area of Polish territories occupied by the Soviet Union (including the area given to Lithuania and annexed in 1940 during the formation of Lithuanian SSR), was 201,015 square kilometres, with a population of 13.299 million, of which 5.274 million were ethnic Poles and 1.109 million were Jews.