I already answered this question before so here you go
Answer: It is A. Ayer or meaning yesterday
Explanation:
Answer: Differences: Costumes, in U.S. celebrate his costumes like the independence day 4 of July. In Ecuador Costumes are the 24 of May war. In South America used to make their own medicines with the nature, while in the United States make with diferent types of chemical process in the drugs.
Similarities: Celebrate New year, Christmas and have the same thinking of the science.
Explanation: I think that the answer says all you need to know and this question isn't from spanish, it's from geography.
