So lets say that, ITTL, the
Tiwi people begin practicing agriculture around 2,000-3,000 years ago (either developing it independently, or through contact with SE Asia) and begin to cultivate all of the crops native to the
Tiwi Islands which they already gathered to eat (and still do) IOTL. These include
Kurlama (which has heavy significance in Tiwi culture even IOTL, with the traditional Kurlama ceremony at the end of the wet season, in which men ritually cook and eat the first yams of the season),
Wupwarna,
Purnarrika,
Muranga,
Jaliwaki,
Yankumwani,
Pinyama, and
Kamuli. They also domesticate the
Kawukawuni, and begin to practice mussel and turtle farming. What would be the best case scenario for TTL's Tiwi civilization, in your opinion? How powerful and wealthy could they become, how much territory could they expand to control at their height, and how much of a chance would their state (/states) stand of maintaining its (/their) sovereignty, if and when the Europeans start to colonize Australia?