What were the four classes of the olmec

Mi hermano espera que el tren a tiempo. a. llegas b. llega c. llegue d. llegues

Which term refers to the natural phenomenon in this image? a. el tornado b. el huracán c. la tormenta d. la inundación

Write about the history of the chilean currency in spanish. mention the names of various individuals who, over the past few decades, were honored by having their portraits included on the currency.