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
The answer is the letter C Ten paciencia.
¿Tiene usted un lápiz y los cuadernos de inglés en la mochila?
Cinco de mayo is important because it is the celebration of the Mexican victory over French forces at the battle of Puebla, on May 5, 1862. that's why it is celebrated on May 5 every year.
I hope this helped (:
