Number system
Base 60 was first used by Sumer because it is divisible by so many numbers. This is why there are 6*60 degrees in a circle, which is conveniently close to 365. Seven known planets led to the week.
Base 60 was first used by Sumer because it is divisible by so many numbers. This is why there are 6*60 degrees in a circle, which is conveniently close to 365. Seven known planets led to the week.