Maya cities were centered around temples used for ceremonial purposes and for observations of the stars, from which the Maya calculated mathematics and astronomy. Where were most of the later cities established? and why you think they were placed where they were.

The very first cities were founded in Mesopotamia after the Neolithic Revolution, around 7500 BCE. Mesopotamian cities included Eridu, Uruk, and Ur. Early cities also arose in the Indus Valley and ancient China.

Explanation:

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the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.

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