Stefan Dusan, Tsar of Serbia, and Ivan Alexander, the Tsar of Bulgaria all made similar claims, claiming to be a legal successor to the Byzantine Empire. Other potential claimants, such as the Republic of Venice and the Roman Empire, are also slowly sinking into history. Crap bag Tote bag. In addition to the political and military interests that the Turks gained, the spice trade route from the East through Muslim intermediaries entered a period of decline. Europe still continued to trade through Constantinople until the 16th century but rising prices spurred the search for alternative supplies without going through intermediaries of the Ottoman Empire and smaller empires like Safavids and Mamelukes. An increasing number of Portuguese, Spanish and Dutch fleets start trying to sail to India through the southern tip of Africa. Indeed, if Columbus did not believe that he would go to Asia to negotiate commercial rights by running the west boat as he presented to his patron, the King of Spain – he would not have found it. new gender.