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>>The oldest Christian communities in the world are in Egypt, Turkey, Palestine 
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Not by  virtue of Islam, which materialized 7 centuries  later.
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>> Building a mosque is illegal in the Vatican.
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So is building a mall.
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>>There is no ancient Muslim community in a Christian ruled country in Europe.
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Incorrect - in the Slavic countries in the Balkans (and Greece), which were part of the Ottoman empire for 500 years.
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>>As for moving people from Europe to Asia and Africa, it happened for 500 years. It was called colonialism..Asians and Africans could not go to European neighborhoods, schools, streets, etc. 
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Your usual way of deflection - "Asians and Africans" are in European neighborhoods, schools, streets  -at this very moment. But seems Muslim patrols in London do not allow non-Muslim crossing their neighborhoods.