Original sentence: Before 1942, Ukrainian territory was divided between the USSR (Central and Eastern Ukraine) and Poland (Western Ukraine).For a variety of reasons, Ukrainian nationalist activity was more active in Western Ukraine, centered in the city of Lviv.In 1929, the Organization of Ukrainian Nationalists was created from retired World War I veterans of the Sich Riflemen.In 1939, when Nazi Germany invaded Poland, the part of Ukraine which had been occupied by Poland was taken over by the Soviet Union.In 1940, the OUN suffered a split into two groups - one group supported Andriy Melnyk (this group became known as the OUN-M, or "Melnykivtsy"), while the other group supported Stepan Bandera (this group became known as the OUN-B, or Banderivtsi).The Nazis were against Poland and provided military training to Ukrainian soldiers.When World War II broke out, the OUN saw a possibility for a renewed Ukrainian State with the help of a new ally, Nazi Germany
Edited sentence: A small part of far western Ukraine, the Zakarpattia, became part of Czechoslovakia.After World War I, Ukraine was divided into three parts: most of Central and Eastern Ukraine became the Ukrainian S.At the end of World War I, veterans of the Sich Riflemen created the Ukrainian Military Organization in 1920 to promote an the creation of an independent Ukrainian state.For various reasons, the Ukrainian nationalist movement was more active in Western Ukraine than in Central Ukraine in the inter-war period.In 1929, the Ukrainian Military Organization became the Organization of Ukrainian Nationalists.In 1940, the OUN suffered a split into two groups - one group supported Andriy Melnyk (this group became known as the OUN-M, or "Melnykivtsi"), while the other group supported Stepan Bandera (this group became known as the OUN-B, or Banderivtsi).R in 1921.The capital was Kyiv.The first leader was Bohdan Kravciv.The leader was Evhen Konovalets.The majority of Western Ukraine became part of Poland.This included the city of Lviv, which at the time was the center of Ukrainian nationalist activity