Who were the Gazis, and what role did they play in building the Ottoman Empire?
A) Children of sultans who were raised to lead armies of conquest into other Muslim lands
B) Captured Christian children who were raised as slaves and given special privileges in return for loyalty
C) Weapon used by Ottoman fighters to slaughter or frighten their enemies into joining the empire
D) Fearless warriors who fought to spread the faith of Islam, thereby expanding the empire