The Safavid Empire was able to become one of the world's most powerful Muslim states partly because of:
A. the development of advanced navigation and sailing technologies.
B. its policies of religious tolerance toward Sunnis, Shias, and
Christians
O C. its close political relationship with China's Yuan and Ming
dynasties.
D. the decline of the Ottoman Empire following Süleyman the
Magnificent's reign.

D. The decline of the Ottoman Empire following Suleyman the Magnificent's reign

Explanation:

The Safavid Empire was founded in 1501 by the Safavid Shahs, following the banning of Shi'a Islam in Ottoman territory. The declaration outlawing Shi'a Islam led to the fleeing of  Shi'a soldiers who joined with and strengthen the Safavid Empire

The Ottoman Empire, from which the Shi'a soldiers joined to strengthen the Safavid, signed a formal peace agreement with the Safavids in 1555, and the Ottoman Empire began declining in 1571 following the Battle of Lepanto, after Suleyman the Magnificent's reign

Therefore, the Safavid Empire was able to become one of the world's most powerful Muslim states partly because of the decline of the Ottoman Empire

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