They were the best Ship Builders and best Sailors of Mesopotamia. They made the first see through glass.
Out of the choices given, the one that did NOT occur after the fall of Constantinople on May 29, 1453 was the Ottomans refused to permit anyone in the region that was not a Muslim. The correct answer is C.
This shows that they were very clever to make a stone wall. This makes trying to bring down the wall harder most likely make enemy think not to attack them.
