Complex sentence: Since the days of Batara Gowa, Gowa had had ambitions to annex the affluent port-polity of Garassiq, site of the modern city of Makassar, but it was not until the era of Tumapaqrisiq Kallonna that this was accomplished.
Split into simpler sentences: Since the days of Batara Gowa, Gowa had had ambitions to annex the affluent port-polity of Garassiq, site of the modern city of Makassar. But it was not until the era of Tumapaqrisiq Kallonna that this was accomplished.