Could Islam have been prevented?
Definitely. Only had to keep them out of Egypt and away from the mediterranean coast. Even if this had not made them collapse outright the mongols would have done them in later.
>>536740607If Rome and Persia had cooperated, there would be no Islam today. A little diplomacy could've changed human history.
>>536740607Mohammed and Temujin are not so different. Both united warring tribes and redirected that energy into foreign enemies. But Mohammed had a better banner and weaker enemies