Complex sentence: According to British historian Daniel George Edward Hall, who wrote extensively on the history of Burma, The Burmese do not seem to have settled in Arakan until possibly as late as the tenth century AD.
Split into simpler sentences: According to British historian Daniel George Edward Hall who wrote extensively on the history of Burma. "He claimed that" The Burmese do not seem to have settled in Arakan until possibly as late as the tenth century AD.