When did the earliest people begin to explore Europe Asia North America?

The approximate date when the migration of Homo erectusa (straightened man) began is 2 million years ago. Later, already 50 thousand years ago, people migrated from Africa to South Asia. 40 thousand years ago, the first people came to Australia. There is still controversy about when people settled in America. There is an opinion that the approximate period when this could happen falls on the date 30-14 thousand years ago. The Arctic and the Pacific islands were settled in our era.