Question

greece had been part of which empire since 15th century

Answer 1

During the reign of diocletian in the late 3rd , the western balkans were organised as a Roman diocese, and was ruled by galerius. under constantine I greece was part of the diocese of macedonia and thrace. the eastern and southern aegean islands formed the province of insulae in the diocese of Asia.

Answer 2

Ottoman empire

Explanation:

The Ottoman empire is lies in the the Ottoman period which is begin from 1415 after end of Constantinople. The Ottoman Turks ruled on Greece who control all mainland Greece and after 1571 to other region of Greece as well.

The Ottoman ruled over many regions of the world and Greece was major part since 15 century until Russia invaded and in 19th century to make it autonomous country after 9 year long war.

Thus, the correct answer is : Ottoman empire.

Learn more,

Ottoman empire : https://brainly.in/question/16264089