Original sentence: Northeastern East Prussia, sometimes referred to as Lithuania Minor, was populated mainly by Lithuanians  and predominantly Lutheran.The Lutherans promoted publishing of religious books in local languages, which is why the Catechism of Martynas Mažvydas was printed in 1547 in East Prussian Königsberg
Edited sentence: The Lithuania Minor region in Prussia was populated mainly by Lithuanians  and religiously dominated by Lutheranism.The Lutherans promoted publishing of religious books in local languages, which is why the Catechism of Martynas Mažvydas was printed in Lithuanian in 1547 in nearby Königsberg