Abstract
The main purpose of this chapter is to present the Generation Model (GM) as an alternative to the Standard Model (SM) of particle physics, which is considered to be incomplete. It will be reported how the GM provides an understanding of three generations of leptons and quarks in the SM, a unified origin of mass, the cause and quantum nature of gravity, the matter-antimatter asymmetry problem, mixed quark states in hadrons, and the conservation of CP and the cause of parity violation in weak nuclear interactions.