its existence
Poca gente sabe de su existencia.
Few people know of its existence.
¿No se supone que su existencia es parte de un alto secreto nacional?
Isn’t their existence supposed to be a matter of top national secrecy?
— Akira (1988)
La ciudad, literalmente, le debe su existencia a Mussolini.
The city literally owes its existence to Mussolini.