Nosotros somos de Guatemala.
Because ser is for more permanent things, like character traits or nationalities, while estar is more for temporary things like feelings or current location
How to remeber ser and estar easy
for how you feel or where you are, always use the verb estar
What does your family like? What do you like to do? What would you like to do with them?
Esto tiene que ver con un texto generico falta el contexto