Why have some historians rejected the labels bc and ad as labels for periods in world history ?

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.

d) iowa i believe is the answer

barrio is a spanish word meaning neighborhood. in spain, several latin american countries and the philippines, the term is also used officially to denote a division of a municipality while a ghetto is a part of a city in which members of a minority group live, typically as a result of social, legal, or economic pressure. the term may have originally been used in venice to describe the part of the city to which jews were restricted and segregated.

how is this a question? but yes, they were. if i recall correctly, it was very handy for native americans to use buffalo skin.