I want to know the answer to the following question:
When did the emperor Constantine  lose rule over in 1453 ?
All the background I'm provided with is that "Added to this, in the first half of the Ottoman period men of Greek origin made up a significant proportion of the Ottoman army, navy, and state bureaucracy, having been levied as adolescents (along with especially Albanians and Serbs) into Ottoman service through the devshirme.". Is that enough to answer the question?
Answer: no