Why does a clock rotate the way it does (‘clockwise’)?

Why is North on top of (most) maps?

Why is the x-axis positive to the right, and negative to the left?

Why do we count so easily in 10s? (but not say: 9s or 11s?)

Why are there 360 degrees in a circle? (and not say: 100?)

Why are there 60 minutes in an hour? 24 hours in a day? 12 months in a year? 7 days in a week?

Why do we work for 40 hours a day, 5 days of the week?