The Indus Valley civilization dates back to when

he roots of the Indus Valley civilization can be traced back to the site of Mehrgarh in Pakistan dated to about 7000 BC. The civilization reached its peak around 2600 BC and it went into decline around 1900 BC. It depends on what you mean. Kot Diji civilization as the start? in this case around 3000 cal BCE.

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it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.