Because the people have never been united
The text defines social psychology as the scientific study of how people think about, influence, and relate to one another.
What is Social psychology?
The objective of social psychology is to understand how people's actual or imagined interactions with others shape their thoughts, feelings, beliefs, intentions, and goals in relation to others. Due to its focus on self-perception and the behavioral interactions among the people that make up society, social psychology is one of the most diverse and complicated subcategories. Social psychologists investigate how thoughts and perceptions can influence behavior and strengthen emotional bonds. After World War II, when people started to become interested in how people behaved in social circumstances and in groups, most of the important research in social psychology emerged. Important studies were conducted in a number of fields.
To know more about social psychology refer:
brainly.com/question/14747257
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Hope this is the right Calderon your talking about lol.
Calderón served as National President of the party, Federal Deputy, and Secretary of Energy in Vicente Fox's cabinet. He served in the cabinet of the previous administration until he resigned to run for the presidency and secured his party's nomination.
I’m not 100% sure but I think it is B; rainforest ( but I may be wrong )
