The image is of a 16th-century illustration of a battle involving the Mughal Empire. The scene is complex with soldiers moving in multiple directions. Fortified castles are being fired upon by three large firing cannons.
Public Domain

From this 16th-century illustration, we can see that which of the following played a large part in the Mughal Empire's rise to power?

Its people first converted to Islam.
It had the advantage of gunpowder.
Its armies were well trained.
Its cities were not subjected to attack.