Final answer:
The gunpowder empires differed in their military structures; the Ottoman Empire's Janissaries, trained in gunpowder technology, were a unique elite force distinct from Safavid and Mughal military organizations.
Step-by-step explanation:
One way in which the cultures of the gunpowder empires differ from one another is the role and composition of their military forces, particularly the Janissaries in the Ottoman Empire. Unlike in other states where nobility or a warrior class maintained prominence despite the introduction of firearms, the Ottoman Empire’s Janissaries, who were originally non-noble Christian youths converted to Islam and trained as soldiers, retained their elite status due to their mastery of new military technologies such as gunpowder weapons. This distinct composition and structure of the Janissary Corps marked a significant cultural difference from the Safavid and Mughal empires, which had different approaches to military organization and technology integration.