What happened in Vietnam (short-term and longer-term) after the US finally withdrew?

by Charlemagne920

Lately I've heard commentators compare the ISIS crisis in Iraq to what happened in Vietnam. I'm not interested in making connections to two distinct points in history, so please ignore the Iraq comparison (and not just because modern topics violate this subreddit's rules), I'm just interested in getting a fuller understanding of what happened then without worrying about whether it's similar/different to other points in history.

Bernardito

Is there anything particular you'd like to know? Because at the time when the US withdrew their military troops from Vietnam, the country was divided into two separate nations. I'm not quite sure what kind of time frame we're speaking of here: are we speaking of 1973 to the fall of Saigon and reunification of Vietnam in 1975 or beyond that? Are we speaking of North or South? Military? Social? Financial?