Original sentence: In the early Middle Ages the consolidation of Baltic lands by the Duchy of Lithuania led to the gradual Lithuanization and subsequent assimilation of neighbouring Baltic tribes or their parts, including the Selonians, Jotvingians, Nadruvians and Curonians
Edited sentence: In the early Middle Ages the consolidation of Baltic lands by the Duchy of Lithuania led to the gradual Lithuanization and subsequent assimilation of neighbouring Baltic tribes or their parts, including the Selonians, Jotvingians, Nadruvians and Curonians who shared religious, cultural, and linguistic similarities