The most common organism in spinal infection is from the bacteria Staphylococcus aureus which typically exists on human skin, followed by Escherichia coli. Most spine infections occur in the lumbar spine because of the blood supply to this region of the spine.
Feudalism, a system of political and military relationships, evolved in western Europe. The feudal system was a simple but effective means of medieval government in which the king rented land to barons, who provided him knights and taxes
The following is a brief overview of feudalism. This was a political system in place in Europe, Japan and China for many centuries. It is useful to reflect on the way this political system works to maintain social order.apan's feudal tradition can be traced to T'ang China and the uji organization in early Japan. Feudalism developed slightly later in Japan than in Europe (12th and 9th centuries, respectively).