Complex sentence: Pope Pius XII erected it as the Apostolic Prefecture of Taipei on December 30,1949, and elevated to the rank of a metropolitan archdiocese on August 7,1952, with the suffragan sees of Chiayi, Hsinchu, Hualien, Kaohsiung, Taichung, and Tainan.
Split into simpler sentences: Pope Pius XII erected it as the Apostolic Prefecture of Taipei on December 30,1949. On August 7,1952, it was elevated to an archdiocese, with the suffragan sees of Chiayi, Hsinchu, Hualien, Kaohsiung, Taichung, and Tainan.