Complex sentence: Most of these were brought about by asymmetrical population growth, as population growth in the south caused the balance of population in the country to shift; some of the communes born in that era include Rumelange, Schifflange, and Walferdange.
Split into simpler sentences: Most of these were brought about by asymmetrical population growth, as population growth in the south caused the balance of population in the country to shift. For instance, some of the municipalities born in that era include Rumelange, Schifflange, and Walferdange.