In 1942, Nichols Spyman created a theory which countered Mackinder’s Heartland theory. Spyman stated that Eurasia’s rimland, the coastal areas, is the key to controlling the World Island.
Explanation - The rimland contains the Heartland. Whoever would control the rimland, would eventually control the World Island. Whoever would control the World Island would soon control the world.
Example - His theory was influential mainly during the Cold War. The Soviet Union desired to control the rimland around them. If accomplished, the Soviet Union would control the heartland, rimland, and the World Island.
Explanation - The rimland contains the Heartland. Whoever would control the rimland, would eventually control the World Island. Whoever would control the World Island would soon control the world.
Example - His theory was influential mainly during the Cold War. The Soviet Union desired to control the rimland around them. If accomplished, the Soviet Union would control the heartland, rimland, and the World Island.