There tropical climate and mountains killed some of the people that first settle in it. People were not used to latin americas climate because no one had yet been there besides the natives because it was the new world.
<span>As a Piagetian, Avery would consider using symbols the highest accomplishment of the sensorimotor period of development.
Piaget developed the theory of various stages of cognitive development. The first stage of cognitive development is the sensorimotor stage (0-2 years of age). The sensorimotor stage of development in turn consists of six sub stages. The most advanced and highest </span>accomplishment of the sensorimotor period of development is when children are able to use symbolic thought to form mental representations of objects. In other words, children at this advanced sub stage are able to mentally visualize objects that are not physically in their field of vision.
Answer: the Byzantines were defeated by the Normans during their conquest of Italy, thereby driving the Byzantines from southern Italy. Even more dangerous than the Normans was a new enemy from the steppe: the Turks.