More than 200 million years ago, geological forces split apart the continents. Isolated from each other, the two halves of the world developed radically different suites of plants and animals. When Christopher Columbus set foot in the Americas, he ended that separation at a stroke. Driven by the economic goal of establishing trade with China, he accidentally set off an ecological convulsion as European vessels carried thousands of species to new homes across the oceans. Eight decades after Columbus, a Spaniard named Legazpi succeeded where Columbus had failed. He sailed west to establish continual trade with China, then the richest, most powerful country in the world. In Manila, a city Legazpi founded, silver from the Americas, mined by African and Indian slaves, was sold to Asians in return for silk for Europeans. It was the first time that goods and people from every corner of the globe were connected in a single worldwide exchange.
Author: Charles C. Mann