Operation Barbarossa—Germany’s military campaign to occupy the East begins in June 1941. How does this influence the establishment of ghettos?

Explanation:

With the invasion on the way, the Soviets started to lose land very fast. They were not well prepared for such a large-scale war and Germany moved fast capturing many cities and villages. They started to make ghettos along the way where they would move Soviet Jews, communists, and Roma. The operation influenced the ghettos because without it there would be no nazis to make the ghettos that served the purpose of helping the holocaust move forward.    

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]