Our aim is to enumerate and catalog what may happen when two countries interact. Because physical systems are easier to observe than nations, it may be of some help to take model on what can happen when two particles interact. In physics, one distinguishes two cases: diffusion and absorption.

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Invasions and Colonization

  • Peter Richmond,
  • Bertrand Roehner

摘要

Our aim is to enumerate and catalog what may happen when two countries interact. Because physical systems are easier to observe than nations, it may be of some help to take model on what can happen when two particles interact. In physics, one distinguishes two cases: diffusion and absorption.