Who would benefit from its use, who could make and use the vessel? it is most useful for people who come from this society who navigate with the viking long boat. The spread of islam, 7th 8th c: warfare was not the central question for the expansion of islam, unless speaking about expansion in technology for communication. The bubonic plague: expansion of the mongol"s seems to have caused a spread of a plague called bubonic the invasion brought a pathogen that may have came from rats or from the ships they came in. Pre-1500: the pre-global world there are important connections in euro-asia. Approaching a definition of war: a formal definition would insist that war is legalistic and involves well-defined combatant entities, for example: war is a conflict between nation-states fought by military forces. The combatants are members of the military, while civilians are non-combatants. It involved local residents, their rulers, the french and the british.