Eli5: how did early civilizations know what was north and what was south

Question

Eli5: how did early civilizations know what was north and what was south

In: Biology

Answer 1

They knew from watching the Sun, which always rises in the east and sets in the west. North is the direction you get from turning 90 degrees to the left from where the Sun rises. South, you turn 90 degrees to the right from where the Sun rises.