“drive out.” This is more than just “drive out.” God told Israel to kill the Canaanites, not just make them run away, but some of them did run away.
“Geshur.” An area in the north of Israel east and southeast of the Sea of Galilee. The land was given to Manasseh, but Manasseh did not drive out the inhabitants of Geshur or Maacath. Centuries later, David married Maacah, a princess of Geshur, and she bore David’s son Absalom (2 Sam. 3:3).
“Maacath.” Maacath was to the immediate south of Geshur in the tribal land given to Manasseh. During the reign of David, the king of Maacath sent 1,000 soldiers to help the Ammonites fight against David (2 Sam. 10:6-8; 1 Chron. 19:6-7).