What does 1 Kings 4:19 mean?

Geber son of Uri was in charge of Gilead, the land that used to belong to Sihon king of the Amorites and Og king of Bashan. There was one governor over that whole region. 1 Kings 4:19 - Modern Text Bible

(Geber’s district included former enemy territory, now under Israelite control, showing the extent of Solomon’s rule.)