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 States
21%
13%
0%
65%
23
flagGermany
7%
30%
0%
61%
26
flagSpain
20%
10%
10%
60%
10
flagPoland
17%
14%
9%
58%
1194
flagthe United Kingdom
16%
16%
5%
58%
55

Gender

men58%
women54%
Ancient Greece
11%
20%
Ancient Egypt
16%
13%
Ancient India
12%
9%
Babylon
59%
55%

Language versions

question
answers
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Which country started using 7 days in week?
34
44%

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