We have complicated too much the study of the Past, giving greater importance to points of view, nationalist, religious and moral interests; that place the historical fact in second place, subordinated to the interest of the system that tries to educate us.The time has come to simplify and show respect for our ancestors, striving to know what really happened in the past, and not just what the system is trying to inform us about.After so many years of studying History, I came to the conclusion that the best way to know the past is through an impartial, objective Chronology that limits itself to placing each event in its exact place in time, revealing History without manipulations or half-truths.This Chronology constitutes the most complete reference material, not only with purely political facts, such as the foundation of cities, the birth of kingdoms and empires, scientific and geographical discoveries, natural disasters and epidemics, but also containing information on the most different fields of human activity: chemistry, astronomy, geography, mathematics, etc. At the same time, the chronology is complemented by data that do not belong to a specific date, but to an entire epoch, they are generalities of each society, curiosities, customs, the religion of each civilization, inventions without an exact date, etc. The result of all this set is one of the most complete existing chronologies, periodically updated with the latest archaeological and scientific discoveries. A work of this magnitude could not be published in a single book, so I have divided it into several collections, and the originals in Spanish are being translated into French, English and Portuguese. The chronology goes from year to year, as far as possible, from prehistory to the present day.For those who prefer a deeper and more detailed study, I have prepared a second chronology, day by day, spanning from 1789 to 1946, divided into four collections.