Answer :
The Islamization of Central Asia began in the eighth century and took several centuries.
Central Asia, which includes the modern-day countries of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan, was a predominantly Buddhist region before the arrival of Islam. The process of Islamization began in the eighth century with the spread of Islam among the Turkic and Persian-speaking populations of the region. It took several centuries for Islam to become the dominant religion in Central Asia, and the process was shaped by a variety of factors, including the spread of Islam through trade and cultural exchange, the adoption of Islam by rulers and elites, and the efforts of Islamic missionaries and scholars.
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Complete Question:
The Islamization of Central Asia _______________________________
1. began in the eighth century and took several centuries.
2. commenced with the migration of Turkic tribes out of the Orkhon Steppe.
3. began in the twelfth century with the rise of the Mongols.
4. was prevented by the presence of Chinese garrisons in the region.