“The lethal war with Kalinga transformed the vengeful Emperor Ashoka into a stable and peaceful emperor, and he became a patron of Buddhism. ... Nevertheless, his patronage led to the expansion of Buddhism in the Mauryan empire and other kingdoms during his rule, and worldwide from about 250 BCE.”
The benefits were jobs, since the factories moved to cities and needed more workers the urbanization began thus creating a high demand for labor
The Indus Valley, they as a people where polytheistic and there civilization was made up of Hinduism, Buddhism and Jainism.
