Complex sentence: Since the completion of the transnational Øresund Bridge in 2000, Copenhagen has become increasingly integrated in the Øresund Region together with the Swedish city of Malmö, growing into a combined metropolitan area.
Split into simpler sentences: Since the completion of the transnational Øresund Bridge in 2000, Copenhagen has become increasingly integrated in the Øresund Region. Within this region, Copenhagen and the Swedish city of Malmö are growing into a combined metropolitan area.