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Why did people start using math?
mathe is a foolish subject it was never needed to began
In what century did people start using plus and minus signs?
19th century.....sorry this is all i know....
Why might some US companies use metric units on labels?
They should start using ONLY metric units. It is high time that the United States starts using international units.
When did Mayans start using math?
appoximately 2000BC
When did you start using seconds minutes hours?
Parker ramsay
When did humans start using time?
As soon as there was time, people were using it, dividing their activities according to day and night, for instance.
When did people start using grass for their lawns?
Right about the time they started having lawns.
When do people start using computer?
people start using computer when the first computer were published at 19.. or 18.. or 20..
Why did people start using family crests?
Crests and similar symbols were means of identifying important people at a time when most people could not read or write.
Why did people start using flags?
to tell people what state there in
Why did Muslims start to count time calendars using AH after Hejira as a starting point?
i think it's the time when Islam has been accepted by the people in medina.
Why did people start using salt?
For seasoning.
When did people start using machines?
when they were invented
Is lunar year a unit of time?
No. Perhaps when people start living on the Moon permanently, the "loonies" (SF writer Robert Heinlein's term for residents of the Moon) will start using it.
When did people start using miracle grow?
1898
When did people start using running water?
i am asking!
Why did people start using a wheel?
to get things around.
