These are the type of the story that put emphasis on the psychology aspects of the characters rather than the plot themselves. The characters here are exposed to dangers on a mental level. From the given choices, the best answer would be the mystery and suspense.
Marshall's plan influenced not only the economic development of Western European countries, but also played a significant role in the fight against the Communists. The 17 Western European countries that wanted to receive assistance according to it were to be expelled from the Government of the Communists. The communist parties in Western Europe significantly weakened their positions and influence.
Some Eastern European countries have not signed the Marshall Plan because of pressure from the Soviet Union and promises to help them.
I believe what you're looking for is economics, but I could be wrong.
Answer:
The traditional dividing line between the east and the west is the Yenisei River valley. In delineating the western edge of the Central Siberian Plateau from the West Siberian Plain, the Yenisey runs from near the Mongolian border northward into the Arctic Ocean west of the Taymyr Peninsula.
