Long-term Effects of Pacific Crossings

From Conquering The Pacific: An Unknown Mariner and the Final Great Voyage of the Age of Discovery, by Andrés Reséndez (HarperCollins, 2021), Kindle pp. 242-244:

Among other things, the newfound transpacific connection led to a population boom in Asia, driven by the introduction of New World crops, especially sweet potatoes, corn, and peanuts. Today, China is the second-largest producer of corn in the world, after only the United States; China and India are the top two producers of peanuts; and New Guineans obtain more calories per person from sweet potatoes than anyone else in the world. Corn, for example, was domesticated in the Americas at least nine thousand years ago but spread across the Pacific only in the sixteenth century. In China, this New World crop made inroads along the Yangtze and Han River valleys, where rice had been cultivated for millennia. Rice requires flooded fields of arable land, so cornfields sprang up at higher elevations and in drier conditions, where rice cultivation was marginal or impossible, thus extending China’s agricultural frontier and transforming what had once been forested hills into cornfields. Roughly speaking, corn produced the same number of calories per hectare as rice, but with far less irrigation and labor. This led to a significant population boom. Although the precise timing and magnitude of this demographic expansion varied from one Asian nation to another, all of them benefited from the incorporation of New World crops. A full accounting of this vast energy transfer from the Americas to Asia has yet to be made, but the preliminary information shows that it was enormous.

Regular transpacific contact also created the first global trading system recognizable to us even today. Economic activities in the Americas came to depend not just on colonial-metropolitan relationships across the Atlantic but on supply and demand around the world—especially in Asia. Excellent examples are the great silver mines of Peru and Mexico, which constituted a mainstay of the economy of the Americas in colonial times and structured life for hundreds of thousands of Native Americans who directly or indirectly, forcibly or not, became a part of the silver economy. Traditionally, this is told as a story of European empires extracting valuable resources from their American colonies. Left unsaid is that the most important end-market customer by far was not Europe but China, where a major tax reform known as “the single lash of the whip” replaced paper money with silver in the sixteenth century. With this tax reform, China instantly became a worldwide magnet for the white metal, absorbing the silver production of neighboring Japan and then turning to the New World mines, which produced upwards of eighty percent of the world’s silver between 1500 and 1800. Without China’s massive and persistent demand for silver, the mines on the American continent would never have attained the scale they did, nor would their profits have spilled over into other colonial enterprises and affected so many lives throughout the hemisphere. The sixteenth century gave rise to the first truly global economy, in which Asia’s relative demographic and economic weight was significant and at times paramount. This feature of our world economy has become familiar to us, as China has continued to demand global resources such as soybeans, copper, and steel, affecting markets all around the world.

By the end of the eighteenth century, British and especially American merchants began building on these earlier transpacific linkages to launch their own ventures. As the Spanish empire in the Americas crumbled in the early nineteenth century, American ships came to replace the old Spanish galleons. The story of the United States’ expansion through the Pacific is well known, as the nation took control of Hawai‘i, Guam, and the Philippines, opened direct trade with Japan and China, and forged a vast network of transpacific interests. As we live in a world increasingly centered on the Pacific, it is imperative that we understand how we got here. The voyages of Urdaneta and of Lope Martín, the Black pilot who now takes his place in world history, were at the dawn of this transformation.