User blog comment:Callumthered/Portuguese Australia?/@comment-32656-20120211074338/@comment-4656717-20120211103548

They moved the line in OTL with the Treaty of Zaragoza! And by moving the line, the ENTIRE continent of Australia, with all its mineral resources, was in their half. They colonised Brazil, India and Timor at the same time, so a few outposts in Australia isn't too unreasonable.