Following Europe’s Industrial Revolution in the late eighteenth and early nineteenth centuries, European demands for raw materials and new markets reoriented Africa’s economy. The transatlantic slave trade declined dramatically as Africans began producing commodities for export. This legitimate trade in African goods proved profitable and led to the emergence of a small black middle class. Islam revived and expanded until about 1870.

After 1880 a handful of Western nations seized most of Africa and parts of Asia and rushed to build authoritarian empires. The reasons for this empire building included trade rivalries, competitive nationalism in Europe, and self-justifying claims of a civilizing mission.

The Ottoman Empire and Egypt prepared to become modern nation-states in the twentieth century by introducing reforms to improve the military, provide technical and secular education, and expand personal liberties. They failed, however, to defend themselves from Western imperialism. The Ottoman Empire lost territory but survived in a weakened condition. Egypt’s Muhammad Ali reformed the government and promoted modern industry, but Egypt went bankrupt and was conquered and ruled by Britain.

Population pressures at home and economic opportunities abroad caused millions of European emigrants to resettle in the sparsely populated areas of European settlement in North and South America, Australia, and Asiatic Russia. Migration from Asia was much more limited, mainly because European settlers raised high barriers to prevent the settlement of Asian immigrants.