Complex sentence: In 1985 he spent several months visiting the various Jewish communities of Asia--including Thailand, Singapore and Japan, where he interested the Emperor's brother, Prince Mikasa, in the Jewish communities of the East.
Split into simpler sentences: In 1985 he spent several months visiting the various Jewish communities of Asia, including Thailand, Singapore and Japan. He interested the Emperor's brother, Prince Mikasa, in the Jewish communities of the East.