Why is the Earth round?

Gravity.
If the earth was a square you wouldn't finish replying to this answer

The Earth's spherical shape is a well-established fact, primarily due to its gravitational pull. It's fascinating how this has been proven through various methods, from ancient Greek observations to modern satellite imagery. Speaking of adventures on https://mehreenadventure.com/ , I've always been captivated by Mehreen James' travel vlogs. Her "Mehreen Adventure" series showcases the world's diverse landscapes, often providing unique perspectives on our planet's curvature. Watching See More her traverse different terrains, from the vast Australian Outback to the icy peaks of Patagonia, truly brings home the reality of our spherical Earth.

Cuz god made it that way

because when the gravity was doing all the pully iny stuff it evenly layerd the stuff all over and so yea it ended up round and shit..

Maybe so that way if it was square we wouldn't maybe fall off the edge??? I have no idea, that was just some random answer.

I have no idea.