What event did NOT occur during George H. W. Bush's presidency?

- the reunification of Germany

-the fall of the Soviet union

-gulf war

-the Iran-contra scandal

I believe it's the Gulf War

The Iran-Contra scandal

Explanation:

George H. W. Bush's presidential term was from 1989-1993

The reunification of Germany took place in 1990, under the Bush Administration

The fall of the Soviet Union was in 1991, under the Bush Administration

The Gulf War was from 1990-1991, under the Bush Administration

The Iran-Contra scandal was from 1985-1987, under the Reagan Administration