This is partly due to the fact that it requires a shorter duration of schooling and it is rewarding as far as finances go. While the length of schooling may be shorter than many other medical professions, there are still requirements that you will need to fulfill in order to become an ultrasound technician.
The Maya civilization developed in an area that encompasses southeastern Mexico, all of Guatemala and Belize, and the western portions of Honduras and El Salvador.
The demise of this dynamic civilization is a mystery, but around 900 AD they abandoned their cities. The Mayan people did not disappear and continue to live in Mexico and Central America. The Aztecs. The Aztecs were a people who came into the Valley of Mexico in the 12th century and quickly rose to become the dominant power in Mesoamerica.