It can be (ousted leaders). It is also used as a verb form.
It is the past tense and past participle of the verb "to oust."
David Ousted was born on 1985-02-01.
He wasn't. He died.
unseated
Hugo Rafael Chávez Frías was temporarily ousted by a coup d'etat in 2002, but was reinstated after public protest.
Odoacer
it's Huerta
military coup
he was overthrown by revolution
yes
Andrew Jackson
Egypt
To eject from a position or place; force out.