Answer:
<u><em>River valley civilizations</em></u>
Explanation:
They were centred around various river valleys as their main source of livelihood and the flourished only due tiote river valley on which they were based. Like the harappan in Indus Valley, The yellow river (Huang He), the Mesopotamia around Tigris and Euphrates and the egyptian Nile.
The city state located on Peloponnese was Sparta.
Sparta was the only city state located on the southernmost part of Greece, on Peloponnese. It is one of the two best known city states along side Athens, and it was always one of the two strongest ancient Hellenic city-states.
Sparta though was not like the other city-states of the Hellenic world. While all others were developing some form of partial democracy, where orientated toward trade, science, Sparta was the total opposite. Sparta was ruled by a monarch. All the healthy boys were trained to serve the military and that was their only job in their lives. Most of the hard work was done by slaves. The women had role in the household but also the same rights as the men. The society was mostly striding toward self-sustaining, resembling and ancient type of socialism in a way.
The earth was formed at approximately 4.5 Billion BC
That would be China! :D :D
