Colony is a Latin word ultimately for colonia and the Roman colonies were, first of all,garrisons that they planted in land they had conquered to keep the people quiet.

殖民地是拉丁词Colony的衍生,对于古罗马的殖民地来说,首先,派兵驻守占领的城市,震慑当地民众

耶鲁公开课 - 古希腊历史简介课程节选