24. the following regions developed their own calendar except

(a) the middle east
(b) china
(c) mesoamerica
(d) sub-saharan africa

social status of early civilizations was based primarily on economic power.- true ( first choice)

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.