Answer:
seventeen parallel
Step-by-step explanation:
The Vietnamese Demilitarized Zone was a buffer zone created in 1954 that divided Vietnam between the communist-led North and the anti-communist South. It followed the course of the Bến Hải River in Quang Tri province just south of the 17th parallel. Initially negotiated as a temporary measure, it became a de facto border between the two states throughout the Vietnam War period. The DMZ was finally breached in March 1975 with the North's last offensive and abolished in July 1976 with the reunification of Vietnam