Electroweak interaction is a fundamental force in particle physics that unites two separate forces: electromagnetism and the weak nuclear force. This theory was proposed in the 1960s by Sheldon Glashow, Abdus Salam, and Steven Weinberg, and it provides a unified description of the electromagnetic and weak interactions between elementary particles. The electroweak interaction is mediated by force carriers known as W and Z bosons, which are responsible for causing interactions between particles that carry electric charge and particles that do not. This theory was confirmed by experimental evidence in the 1980s, leading to the discovery of the W and Z bosons. Electroweak interaction plays a crucial role in the interactions and decay processes of subatomic particles, and it is essential for understanding the behavior of fundamental particles and the structure of the universe at the smallest scales. It is a key component of the Standard Model of particle physics, which describes the fundamental particles and forces that govern the universe.