50 MYA: The Zealandia Plateau doesn't sink into the Pacific. Neither does the Kegurelene Plateau, and several islands in the Atlantic stay above the surface. 25,000 years ago: The first catamarans crossed the Tasman Strait from Westland (what we would know as Australia) to Estland. 16,000 years ago: With the influence of Zealandia/Estland, Australia is much wetter than OTL, with the rain forest more widespread, the continent cooler, and more savanna. The aboriginal population is about 4.5 million in Australia due to the wetter climate. 1245: The population of the Estland reaches five million.