It is primary because it is the official process of methodically collecting information about a certain topic in a specific time period
Vietnam was divided by the Geneva Accords in 1954. President Diem blocked unifying Elections in 1956 and the countries remained separate.
<h3>Explanation:</h3>
The French defeat at Dien Bien Phu allowed the Viet Minh to successfully negotiate for an independent Nation and a Peace treaty. The US and South Vietnam rejected the unifying vote that was one of the conditions.
Can you be more specific and add more context? This has happened plenty of times across human history.
The Protestant Reformation<span> which had started with Martin Luther's Ninety-Five Theses had now swept across Europe and entrenched itself, making a clean break from the Roman Catholic Church and the pope's authority.</span>