Which country started using 7 days in week?

Ancient Greece
Ancient Egypt
Ancient India
Babylon
The sev­en-­day week has deep his­tor­i­cal origins in the as­trol­o­gy of Ancient Near East, being ap­prox­i­mate­ly a quarter of a lu­na­tion. It was (in­de­pen­dent­ly) adopted by the Persian Empire, in Judaism and in Hel­lenis­tic as­trol­o­gy, and (via Greek trans­mis­sion) in Gupta India and Tang China.

Answers distribution

Ancient Greece
Ancient Egypt
Ancient India
Babylon
answers
flagthe United Kingdom
18%
12%
5%
61%
88
flagPoland
17%
14%
8%
59%
1774
flagthe United States
20%
17%
5%
57%
35
flagGermany
12%
26%
4%
56%
41
flagSpain
18%
9%
18%
54%
11
flagRepublic of Ireland
30%
10%
10%
50%
10
flagUnknown
21%
28%
7%
42%
14

Gender

men56%
women54%
Ancient Greece
13%
22%
Ancient Egypt
16%
13%
Ancient India
12%
9%
Babylon
57%
54%

Language versions

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answers
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Which country started using 7 days in week?
52
40%

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Author: $#O!@B
Illustration: yoppy
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