Complex sentence: Clark then farmed for about two decades, with some success, and moved in the late 1910s to Broken Hill, where he became a prominent local figure, and a partner in the first licensed brewery in Northern Rhodesia.
Split into simpler sentences: Clark then farmed for about two decades, with some success, and moved in the late 1910s to Broken Hill. There he became a prominent local figure, and a partner in the first licensed brewery in Northern Rhodesia.