asked 184k views
2 votes
Which innovation extended the number of hours in a day that Americans could work and play

asked
User Deemer
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2 Answers

4 votes

hello!

the answer is electricity

answered
User Batanichek
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2 votes
Its 24 hours in a day. And what you need is 9 hours of sleep. Si if you try and find the equality what would your estimate be
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User Blagae
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7.8k points

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