SSC MTS EXAM

Detailed explanation-1: -All living Aboriginal Australians descend from a single founding population that arrived about 50, 000 years ago, the study shows. They swept around the continent, along the coasts, in a matter of centuries. And yet, for tens of thousands of years after, those populations remained isolated, rarely mixing.

Detailed explanation-2: -Prehistory. It is generally held that Australian Aboriginal peoples originally came from Asia via insular Southeast Asia (now Malaysia, Singapore, Brunei, East Timor, Indonesia, and the Philippines) and have been in Australia for at least 45, 000–50, 000 years.