<Li> Definition of regions in which each European power had an exclusive right to pursue the legal ownership of land </Li> <P> The first reference in an international act to the obligations attaching to "spheres of influence" is contained in the Berlin Act . </P> <P> The principle of effective occupation stated that powers could acquire rights over colonial lands only if they possessed them or had "effective occupation": in other words, if they had treaties with local leaders, if they flew their flag there, and if they established an administration in the territory to govern it with a police force to keep order . The colonial power could also make use of the colony economically . This principle became important not only as a basis for the European powers to acquire territorial sovereignty in Africa, but also for determining the limits of their respective overseas possessions, as effective occupation served in some instances as a criterion for settling disputes over the boundaries between colonies . But, as the Berlin Act was limited in its scope to the lands that fronted on the African coast, European powers in numerous instances later claimed rights over lands in the interior without demonstrating the requirement of effective occupation, as articulated in Article 35 of the Final Act . </P> <P> At the Berlin Conference of 1885, the scope of the Principle of Effective Occupation was heavily contested between Germany and France . The Germans, who were new to the continent of Africa, essentially believed that as far as the extension of power in Africa was concerned, no colonial power should have any legal right to a territory, unless the state exercised strong and effective political control, and if so, only for a limited period of time, essentially an occupational force only . However, Britain's view was that Germany was a latecomer to the continent, and was assumptively unlikely to gain any new possessions, apart from already occupied territories, which were swiftly proving to be more valuable than British - occupied territories . Given that logic, it was generally assumed by Britain and France that Germany had an interest in embarrassing the other European powers on the continent and forcing them to give up their possessions if they could not muster a strong political presence . On the other side, the United Kingdom (UK) had large territorial control on the continent and wanted to keep them while minimising its responsibilities and administrative costs . In the end, the British view prevailed . </P>

Who was not invited to the berlin conference