2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3667Scaling from the empirical metal yield as measured in clusters of galaxies, it is inferred that early in the evolution of the Galaxy the bulge stellar population has produced $\sim 10^9\msun$ of metals, at least 5 times more than the total metal content of the bulge today. It is argued that an early galactic wind from the starbursting bulge has pre-enriched a vast region around it, with these metals being able to enrich to $\sim 1/10$ solar of order of $5\times 10^{11}\msun$ of pristine material. From the empirical evidence that bulges come before disks, it is inferred that the Milky Way disk formed out of this pre-enriched material, which accounts for the scarcity of metal poor stars in the solar neighborhood, the so-called `G-Dwarf Problem'. High redshift observations are now becoming able to efficiently explore the $1.2\lsim z\lsim 3$ region of the universe, when disk formation and morphological differentiation may have taken place.Latex, 6 pages, to appear in "Chemical Enrichment of Intracluster and Intergalactic Medium", ed. F. Matteucci and R. Fusco-Femiano (ASP Conf. SerAstrophysicstext