The primary aim of this study is to provide a deeper and more complete understanding of why the great municipal amalgamation (storkommunreformen) during the 1940s became the political solution to the problem that the Government believed many of Sweden’s municipalities had in satisfactorily providing for a local welfare society. The study also describes the results of this large-scale reorganization process. The events examined include the political decision-making process at the national level that took place during 1939-1949, as well as the regional/local realization of these decisions during 1946-1952. The parliamentary treatment of the municipal division issue should be viewed as a good example of what researchers have termed a Swedish decision-making model. One clear manifestation of this was the fact that the national commission that investigated the question primarily formulated the principles for the reform. The committee’s proposal received strong endorsements in the reports from the reviewers of the proposal. The government authorities and many of the municipalities felt that a new division of municipalities was justified. Opposition that did occur came mostly from rural municipalities with small populations. Many of these municipalities believed that the present municipal divisions functioned well as they were. Of those municipalities that were affected by amalgamation, 39 percent of them did not agree with the decision. The majority of these could agree to merge with other municipalities, but not with the municipalities stipulated by the authorities. Considering the fact that the then current divisions were based on a long tradition, demands for retaining independence could have been greater. At the same time, it should be borne in mind that 66 percent of all larger municipalities were formed using some level of force. This still indicated a relatively widely distributed opposition to the amalgamation decisions, however.