2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36205In order to obtain a well defined quantum gravity we define the spacetime in relation to the "phenomenology" of the physical interactions; however we shall to speculate with this "in General". Besides, we comment the reasons that give to the gravitational field a privilegied situation over the others.7 Pages, LaTeX. Essay on gravitation (corrected version) for the Gravity Research Foundation's Competition (1998)General Relativity and Quantum Cosmologytext