what country is hanoi located in, Which country does Hanoi belong to?

In which country is Hanoi located?

The capital of Vietnam and formerly the Chinese city of Da Luo, Hanoi sits on the Red River Plain in northern Vietnam; an area of about 3,340 square kilometers while boasting a population of about 8.05 million. Hanoi is the political, cultural, and transportation center of Vietnam, with roads and railroads connecting all parts of Vietnam; though in terms of population and economic-size indicators, it is the second largest city in Vietnam.