This thesis concerns the mediation of history in a public arena in society, namely in historical exhibitions in museums. The foci of the thesis are exhibitions on migration history, cultural encounters, “Us” and “the Others”, and in particular how relations based on the principles of class, gender and ethnicity are mediated. The research concerns two exhibitions – "Afrikafararna" (The Travellers to Africa) and "Kongospår" (Traces of Congo). In this thesis museums are viewed as arenas for public education and meaning-making. It explores how the historical contents as well as the forms of mediation in the exhibitions correspond to the task of promoting democracy that has been assigned to Swedish museums. This task is expressed in the intentions of the respective museums, in the general policies on culture and also in the policy documents for schools. Therefore the thesis also explores how pupils and teachers understand the mediation of history and use the museum as a source for learning. Exhibitions are regarded in this thesis as mediation processes of history. Three distinct phases can be seen in this process – the phase of production, the phase of mediation and the phase of reception. People connected to the different phases, such as curators, producers, museum educators, and pupils, have been interviewed. These interviews show how conditions, convictions and scope for action influence how the stories of migration and cultural encounters are told and understood. The contents of the exhibitions are analysed from a perspective of class, gender and ethnicity. Furthermore, the limitations and possibilities for the visitors to intensify their historical consciousness are discussed. The study shows how economic conditions and access to historical source material influence the way history is mediated, but also, and to a very large extent, convictions on pedagogy and concepts of history among museum staff. The latter two are determining factors when it is made clear that the way the historical source material is used results in the fact that history is mediated in a way that does not correspond to the intentions and goals to promote democratic values, such as equality, and active democratic readiness for action. The study shows that the exhibitions in question mediate patterns of subordination and asymmetrical relations between women and men and between Swedes/Scandinavians and Africans in their mediation of history. There are sometimes very distinct lines between “Us” and “the Others”. One of the exhibitions offers more space for individual meaning-making and reflection than the other, however, because of its problematization of the occurrence of African artefacts in Scandinavia and because there are more stories and more voices in the exhibition. The interviews with teachers and pupils show that the visits to the exhibitions are often isolated events that are rarely incorporated into the students’ education in a prolonged theme or perspective. Several students uncritically accepted the mediation in the exhibition, others were provoked and challenged, but the students had little opportunity to discuss these experiences in either the museum or in school. In summing up, several of the results of the analysis show that the mediation of history in the exhibitions cannot be described as corresponding to the demands of a democratic conception of education.