It's D. <span>the Greek city-states sought to colonize land throughout the Mediterranean</span>
The answer is: The Law of Land Warfare, Uniform Code of Military Justice, and Code of Conduct.
The answer may vary from country to country but on an international level the United Nations Charter also provides code of conducts on how modern armies should function in times of war.
These are important in order to provide a moral structure to an Army which can become, as evidenced in history, quite ruthless.
Answer:
just subtract the date he died and 2020