In the summer of 1806 , during the War Hostile_encounter of the Third Coalition ( of Britain , Russia , Prussia , Sweden ) , Napoleon 's ambassador General Count Sebastiani managed to convince Convincing the Porte to cancel Change_event_time all special privileges granted Preventing_or_letting to Russia in 1805 and to open Process_start the Ottoman straits ( Dardanelles ) exclusively to French warships .

It also called Name_conferral on Serbs to stop paying Commerce_pay taxes to the Porte , deemed Coming_to_believe unfair as based on religious affiliation .

In 1830 and again in 1833 , Serbia was recognized Know as an autonomous principality , with hereditary princes paying Commerce_pay annual tribute to the Porte .