What capacity did the Ottoman slaves serve?

Answer 1

Slaves in the Ottoman Empire served in various capacities. They were janissary soldiers, and they ran the empire, manned its ships, generated much of its handicraft product, and served as domestic servants and in harems. Contemporaries believed that the absolute power of the ruler was based on his military and administrative slaves. The Tanzimat enlightenment movement of the mid-19th century initiated the abolition of slavery; by the 1890s only a few slaves were being smuggled illegally into the empire, and the slave population was greatly reduced.

Other prominent Islamic slave societies were on the east coast of Africa in the 19th century. The Arab-Swahili slave systems have been well-studied, and it is known that, depending on the date, 65 to 90 percent of the population of Zanzibar was enslaved. Close to 90 percent of the population on the Kenya coast was also enslaved, and in Madagascar half the population was enslaved. It may be assumed that similar situations prevailed elsewhere in the vicinity and also earlier, but studies to verify the proposition have not been undertaken.

i was acctually just lazy and didnt feel like reading about it, but i did and found the answer hehe i thought id share it ;) so here-ya-go