"The history of the last 500 years is the history of imperialism," writes editor Melvin Page. In the Americas, as a result of imperialist conquest, disease, famine, and war nearly wiped out a population estimated in the tens of millions. Africa was devastated by the slave trade, an integral part of imperialism from the 1400s to the 1800s. In Asia, even though native populations survived, native political institutions were destroyed. Imperialism...