to say why are you leaving in spanish, it is:
Por qué es usted saliendo
irse
Nos vamos
Odio irme/salir/partir
the plane is leaving now- el avión está dejando ahora
Me voy el domingo.
returning soilders spread Spanish flu killing millions and leaving others unable to work.
Gazpacho
"Salimos para Oregon" or "Nos vamos a Oregon"
"Yo voy." I'm leaving is "Yo salgo."
In the sense of 'she's leaving': ella se va OR ella se marcha
(Ella) ya se va.Está por retirse / irse / partir / marcharse.
for me the main reason is the english had good tactics and scared the spanish into leaving