The World (subject name to be changed)

A fantasy world with fully working laws of physics. I'm trying to use mythology and folklore as inspiration while also using my own creativity to create my world. I will also heavily reliant on real world as reference to how realistic is my world.   I want this world to have millennia long history with many cultures over a world with size of the earth.   Magic will be an integral part of my world, but not the most essential, as I want my world to work on laws of physics.