The Geneva Conference signed in 1954 divided the two countries at the 17th Parallel.
Ho Chi Minh
After the treaty.
Ho Chi Minh's Communist nationalists would control the North.
No treaty
The treaty that divided Charlemagne's empire was the Treaty of Verdun.
We would call a "bombing halt" (temporarily suspend aerial bombing over NORTH Vietnam), as a gesture of good will. Hopefully, the north would come to the peace table to negotiate. If not, the aerial bombing would resume. And it did.
a treaty to end American involvement in Vietnam
The treaty that divided Charlemagne's empire was the Treaty of Verdun.
Vietnam was divided in 1954 into North Vietnam and South Vietnam following the First Indochina War.
Treaty of Versailles
Charlemagne's kingdom was divided by the Treaty of Verdun.