Original sentence: Many of the Muslims are ethnic Montenegrins and are declared as such.Most Montenegrins are Eastern Orthodox Christians, belonging to the Serbian Orthodox Church, Montenegrin Orthodox Church and there are also Muslims belonging to Sunni Islam, there is a small number of Roman Catholic Montenegrins.There are some that are declared as Muslims by nationality who speak Montenegrin language as mother tongue.Though nearly 17% of Montenegro's population is Muslim, not all Muslims in the country belong to Montenegrin ethnicity, many are Bosniaks (descendants of Slavs who converted to Islam in the 15th and 16th centuries) and Albanians
Edited sentence: Further, some declare to be "Muslims by nationality", but speak Montenegrin as a mother tongue.Most Montenegrins are Eastern Orthodox Christians, belonging to the Serbian Orthodox Church, Montenegrin Orthodox Church.There are also Muslims belonging to Sunni Islam, as well as a small number of Roman Catholic Montenegrins.Though nearly 17% of Montenegro's population is Muslim, not all Muslims in the country are ethnically Montenegrin, but many are Bosniaks (descendants of Slavs who converted to Islam in the 15th and 16th centuries who were prodimant in the old Sanzak region) or Albanians