Complex sentence: Yasuda Zenjirō, the son of a poor samurai in Etchu Province, moved to Edo at the age of 17 and began working in a money changing house.
Split into simpler sentences: Yasuda Zenjirō, the son of a poor samurai in Etchu Province. Zenjirō moved to Edo at the age of 17 and began working in a money changing house.