Fait général: 1990 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1990 is a stella octangula number.
Culture générale: 1990 is an unremarkable number.
Date historique: June 12th is the day in 2009 that a disputed presidential election in Iran leads to wide ranging protests in Iran and around the world.