Complex sentence: Technically, 1897 marks the end of the Joseon period, as the official name of the empire was changed; however the Joseon Dynasty would still reign, albeit perturbed by Japanese interventions.
Split into simpler sentences: Technically, 1897 marks the end of the Joseon period, as the official name of the empire was changed. However, the dynasty continued to reign, albeit perturbed by Japanese interventions.