Abstract
The very notion of power and by extension the one of great power, have always been elaborate concepts to grasp. Should one study the strength of a nation from a historical perspective, then it appears that the notion of great power could only be defined comparatively. Indeed, it is only in its interaction with others that a nation is, or is not, a great power. Many theorists attempted to determine what places an entity, not especially a political one, in a position of power. From Robert Dahl's emphasis on influence within a decision-making process to James March's stress on power as a control on the outcome of events , the task proves to be demanding. Basically, a large acceptation of the concept seems acceptable here. Britain became a Great Power when she managed to fully integrate the process of decision making among other European Powers, when she influenced their attitude in order to achieve her goals.
