<span>The system of cooperation known as feudalism ended around the 15th century.
Feudalism was a complex system of relationships between people of different classes. The king stood at the top of the system, and nobles were viewed as holding their lands in exchange for their military service to the king. The nobles then had vassals underneath them. And at the bottom of the system, depending on the upper classes for protection and laws, were the peasants, who gave a share of their produce to the lords above them as their part of the exchange.
As a dominant system of society in Western Europe, feudalism had faded by 1500. One reason was that kings had begun to employ professional soldiers for their armies, rather than relying on the nobles to be called upon when needed. Also, the plague of the Black Death that swept through Europe in the 14th century had disrupted the relationships between the nobility and the lower classes. Aspects of feudalism persisted in Europe for a couple centuries, but the full system had reached the end of its dominance in society by the 15th century. In France, all last vestiges of feudalism were abolished during the French Revolution of the 18th century.</span>
<span>emperor Vespasian.... after his death his son took over and finished it</span>
<span>The DNA and centrioles of animal cells are replicated during the process of mitosis. Mitosis simply put is the division of the nucleus of a cell. It is the phase in the cycle of a cell in which the two chromosomes in a cell divide and separate in a nucleus of their own. These chromosomes are completely identical. As a result of mitosis, two identical cells are formed and are known as daughter cells. This process copies and transfers DNA into both the cells that are formed as a result of Mitosis.</span>
