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Abstract Islam started to penetrate into the territory of modern-day Tajikistan quite early, in the second half of the seventh century. By the end of the eighth century, the new dynamic religion of the Arabs had gained a firm foothold among a significant part of the population of the Amu-Darya—Syr-Darya mesopotamia. In the tenth century, Islam became the state religion of the Samanid empire, which Tajik historians are inclined to consider the first state formation of the Tajik people. The entry of the Tajik into the Islamic world was accompanied by the establishment of a high culture, a flourishing of the sciences, and an improvement of the economy.
Aziz Niiazi (Wed,) studied this question.