Its neighbors are Honduras and Guatemala. It is on the equator to the west of Columbia. It is the largest country (in area) in South America. Spanish is not the official language.
Hmmm.. That looks right to me. Sometimes, teachers will use calmada instead of tranquila. You can ask if that is the case here. Otherwise its possible that the teacher made a mistake. If you are still confused, I would just as whoever your teacher is. I'm sure its a mistake on their part :)
Good luck!!