Haghia Sophia served as a mosque until 1935, when Ataturk proclaimed that it should become a museum.
Hagia Sophia was converted from a mosque into a museum on Ataturk's orders in 1935.
Using routine cost data submitted in the course of postal rate proceedings, Section 2 of this paper compares the cost of rural and urban delivery, Section 3 shows the relationship of rural delivery cost to population density, Section 4 analyzes the profitability (viz.