Humans first crossed into the American continent from Asia via the Bering Strait in several waves of migration between 25,000-15,000 years ago. The migrating hunter-gatherers found landscapes ...

They arrived during the Paleo-Indian period, about 9,000NJ,000 BC, at a time when a glacier bisected Ontario and the Champlain Sea covered the St. Lawrence Valley. At first, they were a small ...