Slavery was an accepted custom in many Native tribes. On May 8, 1886, District Judge Layfayette Dawson in Sitka decided that the Thirteenth Amendment and the 1866 Civil Rights Act abolishing slavery applied to the "uncivilized tribes" of Alaska. ...
From text of document: Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, - That the territory ceded to the United States by Russia by the treaty...