Answer:
According to HIstory.com
Faced with an Aztec revolt against their rule, forces under the Spanish conquistador Hernan Cortes fight their way out of Tenochtitlan at heavy cost. Known to the Spanish as La Noche Triste, or “the Night of Sadness,” many soldiers drowned in Lake Texcoco when the vessel carrying them and Aztec treasures hoarded by CortÝs sank. Montezuma II, the Aztec emperor who had become merely a subject of Cortes in the previous year, was also killed during the struggle; by the Aztecs or the Spanish, it is not known
<span>Programs such as Social Security and Medicare, since they are a part of the budget that need to be accounted for every year, make it somewhat difficult to make large-scale spending changes. This is especially true with the number of people signing up to claim such benefits increasing every year, as the population who reach such ages continues to grow.</span>
b. Immigrants scoring low on IQ tests usually did so because of a lack of familiarity with the English language.