Barbary Wars

South of Morocco, no important state had the will or the means to contest Portugal’s use of African coastal waters. Most African states looked inland, regarding the ocean as an aquatic desert and (in West Africa) seeing the dry desert of the Sahara as the real highway to distant markets.

Europeans saw themselves as embattled against a triumphant Islam even while they plundered the New World and invaded the Indian Ocean. Their own achievements in political, military and commercial organization were matched or overshadowed by those of the Ottomans, Safavids, Mughals, Ming or Tokugawa. State-building and cultural innovation were strik

The peace treaty had granted the United States the territory between the Appalachian Mountains and the Mississippi. This produced friction with Spain, which shut the lower Mississippi River to American commerce, threatening the livelihood of restive western farmers. There was a more distant threat to peace: in 1785 Barbary pirates from northern Afr

The most celebrated, and devastating, conflicts were the first two Punic Wars, against Carthage. The earlier lasted for more than twenty years (from 264 to 241 BCE), largely fought in Sicily and on the seas round about, except for one disastrous Roman excursion to the Carthaginian homeland, in North Africa. It ended with Sicily under Roman control

they committed most of those acts in international waters, where legal jurisdictions were by definition blurry. Declaring that pirates were “enemies of all mankind” gave local authorities on land the legal justification to try them for their crimes, even if those crimes had taken place on the other side of the world.