It is a truism to say that we live in a world that has been deeply shaped by imperialism. The history of humanity is, in many ways, a story of the attempted and achieved subjugation of one people by another, and it is unsurprising that such interaction has had profound effects on the contemporary world, affecting cultural understandings of community identity; the composition of, and boundaries between, modern day states; and the distribution of resources between different communities. This article addresses the claim that some contemporary states may possess obligations to pay reparations as a result of the lasting effects of a particular form of historic imperialism: colonialism (Ferro 1997: 1-23, Larsen, 2000. Claims about the harms and benefits caused by colonialism must make some kind of comparison between the world as it currently is, and a counterfactual state where the injustice which characterised so much of historic interaction between colonisers and the colonised did not occur. Rather than imagining a world a world where there was no such interaction, this article maintains that the appropriate counterfactual is one where relations between different communities were characterized by an absence of domination and exploitation. This means that current day states may possess reparative duties which are much more extensive than is often supposed.Quite what it means for a form of interaction to be "colonial" is disputed. Osterhammel defines colonialism as "a relationship of domination between an indigenous (or forcibly imported) majority and a minority of foreign invaders" and notes that "the fundamental decisions affecting the lives of the colonized people are made and implemented by the colonial rulers in pursuit of interests that are often defined in a distant metropolis". (1997: 16-17) Such a general description masks the very wide 2 range of practices which could be described in such terms: Young writes that colonialism "involved an extraordinary range of different forms and practices carried out with respect to radically different cultures, over many centuries", and lists examples including settler colonies such as British North America, Australia and New Zealand, French Algeria, and Portuguese Brazil; administered territories established without significant settlement for the purposes of economic exploitation, such as American Philippines and Puerto Rico, British India, Dutch East Indies, German Togo or Japanese Taiwan; and maritime enclaves, such as American Guantánamo, British Gibraltar, Hong Kong, Malta, and Singapore (2001: 17). While there is great variety in terms of the experience of colonized peoples, it is nowadays commonplace to maintain that the domination that they suffered at the hands of the We recognize that colonialism has led to racism, racial discrimination, xenophobia and related intolerance, and that Africans and people of African descent, and people of Asian descent and indigenous peoples were victims of colonialism and continue to be victims of its consequences. We acknowledg...