Why is north america considered a region

Based on the information in the graph, what can you conclude about humans in the world in general?

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment

In what three areas is the us leader?