Vietnam's national flag is a red star in front of a yellow background.

The story behind the answer

False—the Vietnamese flag is a yellow (gold) five-pointed star on a red field, not a red star on yellow. The red background symbolizes revolution and the sacrifices made for independence, while the golden star represents the nation and the unity of its people. First used by the Viet Minh and flown at the 1945 Declaration of Independence in Hanoi, it later became the flag of unified Vietnam in 1976.

Memory tip: Think “Red Flag with a Golden Star”—red for revolution, gold for the shining unity of the Vietnamese people.