Summarize how the major theories of geopolitics inform contemporary state strategies.

• A. Heartland emphasizes interior control of Eurasia; Rimland emphasizes coastal, sea-power strategies; modern strategy blends land, sea power, alliances, and global institutions to project influence.
• B. Heartland focuses on maritime dominance; Rimland focuses on inland security.
• C. Geopolitics theories are outdated and not used by states.
• D. Only Rimland matters in modern strategy.

Answer: (A)

The main idea being tested is how classic geopolitics explains how states shape power today by using geography in multiple ways. The Heartland idea emphasizes controlling the interior of Eurasia to gain strategic depth, while the Rimland emphasizes coastal areas and sea lanes as the route to global influence. In the contemporary world, successful strategies blend these geographic dimensions with partnerships and international rules: projecting influence through both land power and naval power, and leveraging alliances and global institutions to observe norms, secure resources, and coordinate collective action.

That blend is what makes the correct choice best. It captures the enduring geometric logic of power—control of critical spaces and sea lines—while also recognizing that modern states rely on coalitions, alliances, and rules-based institutions to extend their reach and legitimacy. The other options misstate the theories or suggest they’re irrelevant today, or they cherry-pick one dimension (land or sea) to the exclusion of the broader, integrated approach.