The First Geography Congress, which was convened in Ankara in 1941, at the conclusion of the research that had continued for a long time, separated Turkey into seven geographical regions.
During the congress activities, the fact that Turkey is surrounded by sea on three sides, the presence of mountain ranges lying parallel to the length of the long coastline, the fact that these mountains separate the high, but slightly steep and uneven central section from the influence of the sea and because of this, factors such as the climate, natural plant cover and the distribution of types of agriculture, and the influences of these on the transportation systems and the types of housing between the coastal strip and the central sections, had been taken into consideration and it was possible to divide Turkey into four border and three inner regions.