All three religions are more alike than different for several reasons. To begin with, they all strive for and promote peace. Although there are different names for the creator in each religion, they all believe in the same creator. These three religions are the worlds top three most practiced religions.
I don't know whether this was one of your options, but South Asia can be very well characterized as a Sub-continent.
In fact, it's is commonly referred to as "the Indian Subcontinent" or even simply "Subcontinent". One of the reason for a distinction of this part of the land is that it lies on a different tectonic plate.
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The Savannah River is what runs between the two
