Islam is true path of our lives

[paulpablo]

I've been listening to a lot of audio books about history and it was pretty common back then for rulers to allow the conquered people to practice their religion as long as they all got along and paid their taxes.

Gengis Khan promoted religious freedom, and he was very sly with diplomacy and I think he even used it as an excuse to attack places under the guise of liberating people from religious tyranny.
I've heard the romans liked people to worship many gods because this meant they could all get along with one another, which is why at first they disliked Christianity so much because they believed in only one god.

As the Romans extended their dominance throughout the Mediterranean world, their policy in general was to absorb the deities and cults of other peoples rather than try to eradicate them,[4] since they believed that preserving tradition promoted social stability.[5] One way that Rome incorporated diverse peoples was by supporting their religious heritage, building temples to local deities that framed their theology within the hierarchy of Roman religion.

Mongols were highly tolerant of most religions, and typically sponsored several at the same time. At the time of Genghis Khan in the 13th century, virtually every religion had found converts, from Buddhism to Christianity and Manichaeanism to Islam. To avoid strife, Genghis Khan set up an institution that ensured complete religious freedom, though he himself was a shamanist. Under his administration, all religious leaders were exempt from taxation, and from public service.[1] Mongol emperors were known for organizing competitions of religious debates among clerics, and these would draw large audiences.

I seriously doubt that any large military campaign which expands an empire from Muslims, Mongols, Romans or anyone else was really as a charitable act to help out other countries.

I think you would have to be very niave or very bias or both to believe that the entire Muslim conquest of all these countries went perfectly smoothly, was in total self defence and every conquered people loved the new arrival of the Muslims.