Where did the Indo-Aryan kingdoms develop by 500 B. C.?

Indus Valley

Ganges Plain

Southern coast of South Asia

Brahmaputra Plain

The correct answer is B, Ganges Plain.

It was during the Later Vedic Period (800-500 BC), that the Vedic culture began to extend into the western Ganges Plain, after 500 BC Vedic culture centered on Kuru and Panchala and had some influence at the central Ganges Plain.