HDL/LDL: this ratio compares the level of HDL cholesterol (good) to LDL cholesterol (bad). In this case, it is recommended to have a ratio of 0.4:1, but if you do not have this, it is recommended that you should maintain a ratio above 0.3:1.
In July 1519, Cortes and his men took over Veracruz and in mid-August continued on towards Tenochtitlan. They made alliances along the way with various native tribes who would help the Spaniards take over Cholula, the second largest city in Mexico.
By the time Cortes reached Tenochtitlan, the capital of the Aztec empire, the Aztec population was decimated by European diseases and Cortes had allied himself with a group of the Aztec's enemies. Only then, with the Aztec population crippled by disease and the Spanish backed by thousands of the Aztec's enemies, was Cortes able to conquer the Aztec.