Who made the grid used for math?

The grid used for mathematical purposes, particularly in coordinate geometry, isn't attributed to a single inventor but evolved over time. The concept of using a grid to represent numerical values can be traced back to ancient civilizations, such as the Babylonians and Greeks. However, Rene Descartes is often credited with formalizing the Cartesian coordinate system in the 17th century, which laid the foundation for modern grid-based mathematics.