Why Did Ancient Civilizations Build Megaliths?

Imagine trying to move a giant stone the size of a car, that’s what people did thousands of years ago when they built megaliths. These are huge stones used to make special places like standing stones or big circles. People might have built them for celebrations, important rituals, or even to mark where their ancestors lived. Some think megaliths helped people remember the changing seasons, it’s like having a giant calendar in the sky.