Mount Ararat focus of the searches for Noah's Ark. Augustin Calmet wrote in his 1722 biblical dictionary, "It is affirmed, but without proof, that there are still remains of Noah's ark on the top of this mountain; but M. de Tournefort, who visited this spot, has assured us there was nothing like it; that the top of mount Ararat is inaccessible, both by reason of its great height, and of the snow which perpetually covers it." Archaeological expeditions, sometimes supported by evangelical and millenarian churches, have been conducted since the 19th century in search of the ark. According to a 1974 book
Immigration to Turkey enter through the Eastern border, which generally included all Iranians and Afghans who entered illegally. In 1923, more than half a million ethnic Muslims of various nationalities arrived from Greece as part of the population transfer between Greece and Turkey (the population exchange was not based on ethnicity, but by religious affiliation; as Turkey was seen as a Muslim country while Greece was viewed as a Christian country). After 1925, Turkey continued to accept Turkic-speaking Muslims as immigrants and did not discourage the emigration of members of non-Turkic minorities. More than 90% of all immigrants arrived from the Balkan countries.