People people I find always amusing the way people like to glorify the Muslims at that time.
Lets start that the Muslims weren't that scientifically progressed compared to the Roman empire before it's demise. they were merely copycats. Who had enough Brain to translate and absorb all the ideas that they conquered.
All of "their" ideas are merely Greek and Sassanid inventions that they took from the territory's they conquered something that the Europeans failed to do.
Just a little example of that is the numbers that we use today "1,2,3,4,5,6..." called Arab numbers which are actually were invented by the Indus. So why are they called the Arab numbers???
well because the Europe didn't had a connection to India but the Arabs did. So they just took some good Ideas from the Chinese (which they had also a border with) some from Europe Some from India and some they just "inhered" from the Empires they Destroyed.
Oh and about Christians converting to Islam because of Orthodox oppression please ! I agree there was some, but that wasn't the reason for the "conversation of Christians into Islam".
I don't really want to get into this but her are some interesting facts.
In Persia where most of the population was Zoroastrians was forced gradually and by laws and persecution to convert or die. and if you don't believe me read it yourself.
Persecution of Zoroastrians
Need more proof ?! well what about Egypt one of the cradles of Christianity.
A quot from Wikipedia.
This passage reminds me of something familiar, a yes Europe.
Hope didn't offend anyone...I'm saying that other religions have clean hands, but lets be honest here The Decline of Eastern Christianity wasn't due to it's ideological problems but because they just lost the war (Byzantine) and that was for 3 major reasons 1) Bad Generals 2) Low moral 3) low resources. and all because of a 40 year war with the Sassanid empire which exhausted both empires and permitted the rise of the Muslim Empire.