Different opportunities can drive people to move to other states or countries.
Answer:
Innovations of Emperor Shi Huangdi
Qin Shi Huang standardized writing, a crucial factor in the overcoming of cultural barriers between provinces, and unifying the empire. He also standardized systems of currency, weights, and measures, and conducted a census of his people.
Media is a very powerful tool that can be used for either good or bad. The ones who know how to effectively use media are very powerful. Stalin knew this and effectively used it during his reign. The media did celebrate the accomplishments of Stalin and the Communist Party while at the same time attacked anyone who dared say anything. Likewise the material that showed the government in the negative light was not allowed. Thus he strengthened his rule through the clever use of media and censorship.
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Hinduism was the main region then Hinduism spread into Buddhism then it came more far to other people in the country