KnowraHeartland TheoryLinked fromLinked fromThe 6 pages that link to Heartland Theory, each with the reason it gives.All 6Broader topic 1Related 3Compared with 2Nicholas SpykmanCompared with: Spykman challenged Mackinder’s emphasis on the continental interior by prioritizing the coastal belt.RimlandCompared with: Spykman challenged Mackinder’s emphasis on the continental interior by stressing Eurasia’s coastal margins.