Bimbisara extended his territories through conquests and marriages. He married the daughter of the king of Kosala and received the province of Kashi as dowry. The ruler of Kosala thus became his friend. He also married the Lichchavi princess of Vaishali and thereby extended his friendship ties in this region. His third wife was the daughter of a chieftain of Punjab. Infact, Bimbisara was the first Indian king who brought a large part of Northern India under a unified political control.