In the south, former slaves had to resort to sharecropping. What did the white land owners give the former slaves for working their land?

Why is it necessary to obey social norms? write briefly.

Dunkin' donuts is expanding in several different countries. its stores offer curry doughnuts in india, dulce de leche doughnuts in peru, and cherry brandy doughnuts in germany. this is an example of segmentation based primarily on:

Dr. laguardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. he conducts a quasi-experimental study in which he examines football players before and after the regular season using the benton facial recognition test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. he finds that players who had concussions during the regular season performed worse on the benton facial recognition test than did players who did not experience which of the following is true regarding external validity in dr.laguardia's study? a. because dr. laguardia selected participants who actually experienced concussions, the study b. because dr. laguardia's study is a quasi-experiment, it is impossible to obtain c. because dr. laguardia's dependent variable was assessed in the laboratory, the study 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.