Wadi Ara
The region was originally designated to fall under Jordanian jurisdiction, but while negotiating the 1949 Armistice Agreements, Israel insisted on having it within its side of the Green Line, for military and strategic reasons. To achieve this, a territorial swap was negotiated, ceding the Israeli territory in the southern hills of Hebron in exchange for the Triangle villages in Wadi Ara. The term was later expanded to include the entire area around Wadi Ara (the Northern Triangle of today) and the "Little" appendage quickly fell out of common use.