Where are russia’s most productive farmlands?

In the European part of Russia, the most productive land is in the Central Chernozem Economic Region and the Volga Economic Region, which occupy the grasslands between Ukraine and Kazakstan. More than 65 percent of the land in those regions is devoted to agriculture.

The most productive regions are the central black-earth region northeast of Ukraine and the north Caucasus region between the Black and Caspian seas.

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]

christianity is the most common religion in poland among the polish.