The coastal migrants from Asia were probably the first wave of humans to cross the Bering land bridge in western Alaska, and many of them initially settled in the interior of what is now Canada. The Tlingit were the most numerous of this group, claiming most of the coastal Panhandle by the time of European contact and are the northernmost of the group of advanced cultures of the Pacific Northwest Coast renowned for its complex art and political systems and the ceremonial and legal system known as the potlatch. The southern portion of Prince of Wales Island was settled by the Haidas fleeing persecution by other Haidas from the Queen Charlotte Islands (which are now named Haida Gwaii and part of British Columbia). The Aleuts settled the islands of the Aleutian chain approximately 10,000 years ago.