Written fifteen months after the "First Letter", Cortés informs in the "Second letter of relation" the previous process to the Fall of Mexico-Tenochtitlán. It began with an apology to the kings for the time he took to write; and continued with the sinking of the brigs to avoid his men regret to go with him and go back to The Spaniard; he exposed his decision to conquer the city and with this justified his expedition. He described the power, wealth and religion of the Mexica. He mentioned the meetings he had with the Tlatoani of Tlaxcala, Xicotencatl and the gold that received from the by caciques and the Tlatoani Moctezuma II, his impressions when knowing the political conflicts within the territory and his visit to Cholula. Later he noted the conflicts with Moctezuma and his confrontation with the Mexica, the battle that took place in Mexico-Tenochtitlán during his absence, when he left to meet with Pánfilo of Nárvaez, the tlatoani's death and his defeat by Mexica forces. After this, they went to Tlaxcala, where the natives offered him his support to defeat the Mexica. They began to build brigantines to besiege Tenochtitlán in company of more native allies, the conflict with Pedro of Alvarado in the market of Tlatelolco, the sacrifices of the Spaniards, the capture of Cuauhtemoc, the defeat of the Mexica and the fall of Mexico-Tenochtitlán.