some for exploration and others moved here because they were no excepted in there social society
The answer is D. All of these!
The most important effects that the Mongols had on Europe and Asia were increasing the flow of goods and knowledge between the two regions, the unification of present day Russia and the introduction of new diseases. For example, knowledge of gun-making traveled from Asia to Europe during Mongol rule<span> </span>
They were kept from combat roles.
