Jamieson, Fausset and Brown on Acts 17:26-27

26-27. and hath made of one blood all nations of men to dwell on all the face of the earth--Holding with the Old Testament teaching, that in the blood is the life (Ge 9:4; Le 17:11; De 12:23), the apostle sees this life stream of the whole human race to be one, flowing from one source [Baumgarten].

and hath determined the times before appointed, and the bounds of their habitation--The apostle here opposes both Stoical Fate and Epicurean Chance, ascribing the periods and localities in which men and nations flourish to the sovereign will and prearrangements of a living God.