Marriages in the Mongol Empire were arranged, however Genghis Khan's later nokoger (literally "women friends" but seen as wives usually and later) and those of his officers were not ever paid for with any bride price, but men were permitted to practice polygamy. Since each wife had their own yurt, the husband had the opportunity to choose where he wanted to sleep each night. Visitors to this region found it remarkable that marital complications did not arise. The location of the yurts between the wives differed depending on who married first. The first wife placed her yurt to the east and the other wives placed their yurts to the west. Even though a husband remained attached to his first wife, the women were "docile, diligent, and lacked jealousy" towards one another.