A Grand Unified Theory (GUT) is a theoretical framework in physics that aims to unify the three fundamental forces of the Standard Model: the electromagnetic force, the weak nuclear force, and the strong nuclear force. By combining these forces into a single theoretical model, GUTs seek to explain how they interact at high energy levels, particularly during the early moments of the universe. GUTs are an important step toward a more comprehensive theory that includes gravity, which is described by general relativity. While no GUT has been experimentally confirmed, they provide valuable insights into the fundamental nature of matter and the universe, guiding research in particle physics and cosmology.