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The sea both separates and connects land. Efficient shipping increases trade and specialization of production, and makes cultural contacts between people easier. Maritime lines of communication are, however, also vulnerable to violence, and they can be used for transportation of military forces. Sea power, the ability to control the sea with armed force, is therefore important for rulers and societies connected with the sea. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Stored only when both papers are in the corpus — 2 citations exist upstream.
Papers that cite the same references — the relational fallback while embeddings are still backfilling.
Imported from OpenAlex (CC0) — nothing here is generated.