Why do many Vietnamese have "Nguyen" in their name?

According to some estimates, the surname "Nguyen" is used by around 40% of the population in Vietnam. This country is home to 95 million people, so there are nearly 38 million Mr. or Mrs. Nguyen. This makes Nguyen the 4th most popular name in the world, just behind Lee, Zhang and Wang, all Chinese names. See acast.com/privacy for privacy and opt-out information.
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