Roman architects and engineers built spectacular structures admired for such features as the arch and the dome. how did the architecture of constantinople compare with roman architecture?

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.