This chapter details the circumstances and techniques behind the colonial acquisitions and conquests of Nigeria during the late nineteenth and early twentieth centuries. It details two broad categories of methods used by colonial forces: forceful acquisitions and acquisitions achieved through diplomacy. While broad categorizations of colonial techniques are made, this chapter outlines that different techniques could and were used for every Indigenous polity involved. The strategy behind every colonial conquest depended on numerous factors such as the size, “sophistication,” geography, and local political landscape of the polity in question. However, while the techniques behind the colonial acquisitions could drastically differ, this chapter outlines the common goals behind each strategy: to drive a set of processes that weakened the power and authority of indigenous power structures. This would create a power void that, through gradual or rapid action, would be filled by colonial forces or actors aligned with colonial interests. The reactions and independent actions taken by indigenous polities are equally crucial to the history in question. Like their European counterparts, the indigenous states of Nigeria reacted to colonial meddling and the actions of their fellow polities in many different ways, with varying degrees of success.