Russia
EUROPE
The international borders of the RSFSR touched Poland on the west; Norway and Finland on the northwest; and to its southeast were the Democratic People's Republic of Korea, Mongolian People's Republic, and the People's Republic of China. Within the Soviet Union, the RSFSR bordered the Ukrainian, Belarusian, Estonian, Latvian and Lithuanian SSRs to its west and Azerbaijan, Georgian and Kazakh SSRs to the south. Roughly 70% of the area in the RSFSR consisted of broad plains, with mountainous regions mainly concentrated in the east. The area is rich in mineral resources, including petroleum, natural gas, and iron ore.