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.
Hace dos años que estudio fotografía.
Hace tres años que estudio español.
Hace doce años que estudió inglés.
Hace tres meses que estudio justicia penal.
Hace cuarto años que estudio alemán.
Pedro se lava los dientes.
