Christianity conquered Evrope for 3 major reasons
- The rulers found monotheism more useful in consolidating and extending their power
- Early Christians where not afraid to die for their religion
- Evropean-Pagans where shown no mercy it was "convert or die"
This mix of political expediency, hardcore zealotry and sheer brutality and violence did it for Christianity.. they still needed 1000years to do it.
The exact same circumstances are true today for Islam, the political class want's it, the Muslims will gladly die for Islam and they will show no mercy to those standing in their way.
Mind you there was actual cultural and military resistance to Christianity there is next to NO resistance to Islam and that is why it won't take 1000years but maybe 100 - UNLESS we do something about it and do it fast
PS. (((they))) are still more dangerous to us than any Muslim ever could