The bombing of Hiroshima, with about 140,000 Japanese casualties.
Answer:
Before the industrial revolution, people didn't need clocks; they worked from sunrise to sunset. After the revolution they needed clock to keep up with there work schedule. Most Americans lived in the country,farming. After the revolution most Americans lived in the city's.
Explanation:
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John baptized Jesus, Paul was a disciple, Nero decided Jesus fate, Diocletian believed Jesus innocent !