2points
why is it useful for historians to base certain studies on the analysis of
geographic regions?
o
a. the particular countries that make up each region do not change
over time.
o
b. experience has confirmed that analyzing regions is the most
effective approach to history.
o
c. the major historical themes apply only to certain civilizations in
certain regions.
o
d. societies located in the same region can affect each other's
development.
submit

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

the use of electrical signals that transit messages is know as

semi-desert lowlands, hope this !

answer; belief perseverance;