[1] The Firman was issued in a time period when the Ottoman Empire was subjected to a growing diplomatic pressure from the West to suppress slave trade and slavery in the Ottoman Empire.
Responding to the influence and pressure of European countries in the 19th century, the Empire began taking steps to curtail the slave trade, which had been legally valid under Ottoman law since the beginning of the empire.
One of the important campaigns against Ottoman slavery and slave trade was conducted in the Caucasus by the Russian authorities.
[2] In 1830, a firman of Sultan Mahmud II declared "white slaves" of the Empire to be manumitted.
[3] The Ottoman Empire practiced the Islamic Law, which allowed Muslims to enslave war captives.