Demographic Transition
Population aging is a by-product of the process known as "<em>Demographic Transitioning</em>." This process is determined mostly by fertility and mortality rate. For example: a population that has a high fertility rate has a low amount of older people, and vise versa.
Mexico wanted to settle Texas itself, as it was worried about the French presence in the neighboring Louisiana - a settled Texas could work as a "border" between the two". In 1821, when Mexico became independent, it encouraged US-Americans to settle is, as their objective was increased settlement in the area (but not by French).
it is the loud sound that happens when u go faster than the speed of sound.
