Answer:
Cetratio
Explanation:
Centration was introduced by a Swiss psychologist named Jean Piaget through Cognitive developmental stage theory, proposed by him.
Centration is the tendency to focus on one salient aspect of a situation and neglect other possibly important aspects. It is a behaviour often demonstrated in the pre-operational stage of development according to Piaget.
From the question, Beatriz doesn't want to see her mother as her Grandpa's daughter. As long as she is concerned she is only her mother and nothing else but her mother. This is Centration behavior according to Piaget
Meriwether Lewis and William Clark helped open the American frontier to settlement by exploring the regions further out west. They mapped these territories and found accessible routes, so that Americans could move further out west and settle the land before the Europeans could claim it. There was also a smaller objective of studying the science and possible economic qualities.
The original purpose was to break off from King George.
MERCOSUR is an abbreviation of "Mercado Comun del Sur": common market of the South America: most of the eastern South American coutries are members of this common market.
It's a trade block of countries in South America which promotes free trade and free movement of people.