Complex sentence: The prince fell from grace with the Ottomans in 1633 and lost control over Palmyra, which remained a Sanjak until it was incorporated to Deir ez-Zor Sanjak in 1857, and became the center of an Ottoman garrison to control the Bedouins in 1867.
Split into simpler sentences: The prince fell from grace with the Ottomans in 1633 and lost control over Palmyra, which remained a Sanjak until incorporated to Deir ez-Zor Sanjak in 1857. Palmyra became the center of an Ottoman garrison to control the Bedouins in 1867.