For the past 500 years European nations—Portugal, the Netherlands, Spain, Britain, France and, briefly, Germany—were able to plunder much of the planet by projecting their naval power overseas. Since much of the world's population lives along the coasts, and much of it trades over water, armed ships that arrived suddenly out of nowhere were able to put local populations at their mercy.

The armadas could plunder, impose tribute, punish the disobedient, and then use that plunder and tribute to build more ships, enlarging the scope of their naval empires. This allowed a small region with few natural resources and few native advantages beyond extreme orneriness and a wealth of communicable diseases to dominate the globe for half a millennium.