 The unrest culminated in a series of mass strikes and tensions between governments and trade unions.Dissatisfaction with the poor economic progress upon decolonisation made it clear to African leaders that they could no longer rely on rhetoric and tradition to maintain power, and could only retain the support of their political base through a coherent economic model, aligned with their political interests.The culmination of these political and economic issues necessitated the adoption of ISI, as it rejected the colonial neo-mercantilist policies that they believed led to such underdevelopment.