The person's environment
is the fit explanations for the statement psychologist adopting a behavioral
perspective to the study of psychology. Psychologist is the people who master
or a professional regarding mental health and the one who studies and evaluates <span>behavior
and mental processes.</span>
It spread through trainers and new innovations. Most popularly, the invention of the printing press.
I would say the Louisiana purchase because it doubled the size of the U.S.