Complex sentence: Starting from the earliest period, the city had been successively ruled by the Hurri-Mithani, Hitites and the Assyrians and once, was also the capital city of the Aramean Bit-Zamani kingdom.
Split into simpler sentences: Starting from the earliest period, the city had been successively ruled by the Hurri-Mithani, Hittites, and the Assyrians. It was also once the capital city of the Aramean Bit-Zamani kingdom.