The mass production of steel. bessemer process <span />
Global warming. If the center of our earth weren't warming continuously or weren't as active, we would have as much global warming.
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Writing began to disappear and the standardized weights and measures used for trade and taxation fell out of use. Scholars have put forth differing theories to explain the disappearance of the Harappans, including an Aryan Invasion and climate change marked by overwhelming monsoons.
Explanation:
Answer:
Seems like a question that doesn't have a wrong answer, but I would say a society where everyone is economically equal, just to play it safe.