Genetically they are similar so the main difference stems from language, customs, traditions and religion.
There are not that many European Muslim countries. The three most important of them are Albania, Kosovo, and Bosnia & Herzegovina. North of Albania and Kosovo is Serbia and Montenegro. North of Bosnia is Croatia.
Albania, Croatia, Bosnia and Herzegovina, Montenegro, Kosovo, Macedonia, Serbia, Slovenia
Three European countries have Islamic majorities: Albania, Bosnia and Kosovo. But all of these countries are officially secular, and have no official religion.
Croatia Serbia Bosnia Montenegro Albania Macedonia kosovo Bulgaria and Slovenia
Greece Macedonia Bulgaria Turkey Albania Kosovo Montenegro Serbia Bosnia and Herzegovina Croatia Slovenia Romania as well as a small portion of Italy (northeastern corner)
Hungary, Romania, Bulgaria, Macedonia, Montenegro, Bosnia, Croatia.
Two Albania and Kosovo, while bosnia is only 40% muslim and turkey not being all the way in europe.
Slovenia Croatia Bosnia and Herzegovina Montenegro Albania Serbia Kosovo Romania Bulgaria Macedonia Greece Turkey
Slovenia Croatia Bosnia and Herzegovina Montenegro Serbia Kosovo Romania Bulgaria Macedonia Albania Greece Turkey
Croatia, Bosnia and Herzegovina, Serbia, Albania and Kosovo have boundaries with Montenegro. Also, Italia is right across the Adriatic sea.
drive the people of Kosovo into Albania
Bosnia, Turkey, Albania, and Kosovo are the only countries with European territory that have a majority Muslim population.France has a Muslim population of 8%. Bosnia, Turkey, Albania, Kosovo and Azerbaijan (a small part of it is in Europe, like Turkey) are the only countries in Europe which have majority-Muslim populations.