'Border' in the Bible

Thus saith Jehovah: For three transgressions of the children of Ammon, and for four, I will not revoke its sentence; because they ripped up the women with child of Gilead, that they might enlarge their border.

Pass unto Calneh, and see; and from thence go to Hamath the great; and go down to Gath of the Philistines: are they better than these kingdoms? or their border greater than your border?