As we all know, the mongols under Genghis Khan and his
descendents conquered a large part of the world and almost
conquered the whole world.
The terriorities under the mongols far exceed the terriorities
under the prosperous Han and Tang dynasty and also far exceeds the
roman empire or the terriorities conquered by Alexandra the
Great.
Do you think this period should be considered as World War 1 since
the war involves almost the whole world?