Complex sentence: In September 2012 Ancestry.com expanded its international operations with the opening of its European headquarters in Dublin, Ireland, with a new call centre for international customers, as well as product, marketing and engineering teams.
Split into simpler sentences: In September 2012, Ancestry.com expanded its international operations with the opening of its European headquarters in Dublin, Ireland. The Dublin office includes a new call centre for international customers, as well as product, marketing and engineering teams.