Ottoman Bulgaria

The Ottomans reorganised the Bulgarian territories as the Beyerlik of Rumili, ruled by a Beylerbey at Sofia. This territory, which included Moesia, Thrace and Macedonia, was divided into several sanjaks, each ruled by a Sanjakbey accountable to the Beylerbey. Significant part of the conquered land was parcelled out to the Sultan's followers, who held it as feudal fiefs (small timars, medium ziyamet and large hases) directly from him. That category of land could not be sold or inherited, but reverted to the Sultan when the fiefholder died. The rest of the lands were organized as private possessions of the Sultan or Ottoman nobility, called "mülk", and also as economic base for religious foundations, called "vakιf". Bulgarians gave multiple regularly paid taxes as a tithe ("yushur"), a capitation tax ("dzhizie"), a land tax ("ispench"), a levy on commerce and so on and also various group of irregularly collected taxes, products and corvees ("avariz").
The Ottomans did not normally require the Christians to become Muslims. Nevertheless, there were many cases of individual or mass forced islamization, especially in the Rhodopes. Non-Muslims did not serve in the Sultan's army. The exception to this were some groups of the population with specific statute, usually used for auxiliary or rear services, and the famous "tribute of children" (or blood tax), also known as the "devsirme", whereby every fifth young boy was taken to be trained as a warrior of the Empire. These boys went through harsh religious and military training that turned them into an elite corps subservient to the Sultan. They made up the corps of Janissaries (yenicheri or "new force"), an elite unit of the Ottoman army.