What was the most important for people of the plains

Why are people more likely to marry individuals with social and cultural backgrounds very similar to their own? a. parents and other family members always exert pressure to marry within the group. b. people spend a great deal of time alone, and therefore can have few opportunities for meeting people. c. people develop irrational fears of out-group members and are scared to date them. d. people have greater access to individuals like themselves.

The vietnam war was considered by many to be america’s first unopposed win independent war defeat

Rank the following from most to least devasting: ordovician,permaian,cretaceous, pleistocene