Page "Mieszko I of Poland" Paragraph 17

By the time Mieszko I took over from his father, the Polans ' tribal federation of Greater Poland had for some time been actively expanding.

Continuing this process, perhaps in the first years of Mieszko's reign, if it had not been done already by his father, Mieszko I conquered Masovia.

Likely also during that period or earlier, at least partially Gdańsk Pomerania was obtained.

Mieszko's interests were then concentrated mainly on areas occupied by the eastern ( near the Oder River ) branches of the Polabian Slavs ; some of them became soon subordinated by him.

As Widukind of Corvey wrote, Mieszko ruled over the tribe called the Licicaviki, now commonly identified with the Polabian Lubusz Land.

Having the control over those more western ( in respect to the original homeland of the Polans ) tribes, Mieszko had entered the German sphere of influence.