Complex sentence: Like the Mitsubishi Zero, which it resembled, the radial-engined Ki-43 was light, manoeuvrable and easy to fly, and was known for its nimble handling and legendary for its performance in East Asia in the early years of the war.
Split into simpler sentences: Like the Mitsubishi Zero, which it resembled, the radial-engined Ki-43 was light, maneuverable and easy to fly. The Ki-43 was legendary for its combat performance in East Asia in the early years of the war.