‘Land of Tears’ offers a chilling look at European colonization of Africa

The long era of European imperialism started in the 15th century but it was roughly 400 years before the land grab turned to Africa. As late as 1870, outsiders controlled only about 10 percent of the continent. But then a confluence of forces opened the door: The need for raw materials, the demand for new markets for finished goods, and medical advances that made it possible for Europeans to survive in the tropics. By the 1880s, the “Scramble for Africa” had begun.

At the heart of this rapacious quest was the Congo River in equatorial Africa and its enormous, almost