Hitler had a number of reasons for wanting to expand Germany's territory, but he often talked about Lebensraum, or living space, for the German people. German agriculture was really inefficiently organized into lots of small farms, and that meant that Germany needed a lot of land in order to be self-sufficient in food production. The plan was to take Poland, the Ukraine, and eastern Russia, and then resettle that land with lots of Germans so that it could feed German people. This was called the Hunger Plan, because the plan called for 20 million people to starve to death. Many would be the Poles, Ukrainians, and Russians who'd previously lived on the land. The rest would be Europe's Jews, who would be worked to death. 6 million Jews were killed by the Nazis, many by starvation, but many through a chillingly planned effort of extermination in death camps.