The Tajiks of Tajikistan, numbering approximately 7,410,000 people, are Engaged yet Unreached. They are described as descendants of ancient Eastern Iranian peoples of Central Asia, including Sogdians, Bactrians, and Sakas, who shifted from their ancestral tongues to Persian after the 7th-century Islamic conquest, with the Samanid Empire regarded as an ancestral polity They are an Indigenous people, with Tajik as their ethnic/kinship group and are in the Tajik people cluster of the Persian-Median Peoples. They mostly adhere to Sunni Islam and Tajik is their primary language.