Electroweak Theory is a fundamental framework in particle physics that unifies two of the four known fundamental forces: the electromagnetic force and the weak nuclear force. Developed in the 1970s by physicists like Sheldon Glashow, Abdus Salam, and Steven Weinberg, this theory describes how these forces interact at high energy levels, particularly in the context of particle collisions. The theory predicts the existence of W and Z bosons, which are responsible for mediating the weak force, and it successfully explains various phenomena, including the behavior of neutrinos. Electroweak Theory is a crucial component of the Standard Model of particle physics, which describes the fundamental particles and their interactions.