As a revolutionary Marxist party, FRELIMO embarked on overturning traditional, tribal governance structures that grew extensively under the Portuguese colonial rule in an effort to counter regionalism and tribalism to build a single, national identity. Shortly after independence many local chiefs were ousted and removed from positions of power and many dissidents were imprisoned in re-education camps. Another source of conflict was the continuation of the aldeamento system that the Portuguese had introduced as a means of exerting control and inhibiting contact between the population and the rebels. It coerced thousands of peasants to move into communal villages and communal farms where they were given food, water and healthcare, but lacked adequate tools and money to farm effectively. FRELIMO hoped that this system would enable the fulfilment of its ambitious agricultural development goals, but the implementation often alienated parts of the rural population, whom FRELIMO had popular support from during the independence struggle. This was especially the case in central and northern Mozambique, where households are traditionally separated by considerable distances.