Supersymmetry supergravity and unification A brief history of unification Gravitation Non Abelian gauge theory The standard model Anomalies Effective Lagrangians Supersymmetry Grand unification MSSM Lagrangian N=1 supergravity Coupling of supergravity with matter and gauge fields Supergravity grand unification Phenomenology of supergravity grand unification CP violation in supergravity unified theories Proton stability in supergravity unified theories Cosmology astroparticle physics and SUGRA unification Extended supergravities and supergravities from superstrings Specialized topics The future of unification