Complex sentence: The Meiji period ended with the death of the Emperor Meiji in 1912 and the beginning of the Taishō period (1912--1926) as Crown Prince Yoshito became the new emperor (Emperor Taishō).
Split into simpler sentences: The Meiji period ended with the death of the Emperor Meiji in 1912. The beginning of the Taishō period (1912--1926) as Crown Prince Yoshito became the new emperor (Emperor Taishō).