The capital of Vietnam is Hanoi. Before the Vietnam war the capital of south Vietnam was Saigon.
Their is 88.78 million people in Vietnam.
Vietnam main temperature is between 3 and 24C it is warm in the flater land and colder the moutntain range areas.
There are threats to the environment in Vietnam controlling contamination of the air and land. The water isn't very healthy in Vietnam today. With the rainforests cover being destroyed there's no canopy to protect the soil from erosion.