Answer:
They served a a place of worship
Explanation:
The only people allowed to vote was Wealthy land-owners who were white and male. If you were not all these, you were disqualified. I hope this helps!
For this question you need only to know what the capital of the Byzantine Empire was: it was Constantinople, this should be the correct answer (I hope it's in options).
Today this city is known as Istanbul, and it's the biggest city in Turkey.