Sean Carroll’s New York Times article “Tracking the Ancestry of Corn Back 9,000 Years” provides some thought-provoking information on the pivotal historical role of America in the world’s food production:
Native Americans alone domesticated nine of the most important food crops in the world, including corn, more properly called maize (Zea mays), which now provides about 21 percent of human nutrition across the globe.
That ought to humble those of us who believe that Europeans or those who remained in Asia were responsible for all the glories of mankind. How many of us can even name some of the other eight foods that Native Americans domesticated? I came up with only two instantly: pumpkins and tomatoes. After some contemplation, I came up with a few more, but I also discovered my ignorance of crop history.
Here’s a list from “Facts for Kids: Native American Food”:
Other important American Indian crops included beans, squash, pumpkins, sunflowers, wild rice, potatoes, sweet potatoes, tomatoes, peppers, peanuts, avocados, papayas, and chocolate.
A more detailed list appears on Waepedia.
As usual, the research to cure my ignorance ended up giving me more than just a few facts. I started thinking about how civilizations identify themselves with their dominant resources. Like the ancient cultures whose ancestors transformed teosinte into modern corn, most of us take corn for granted. We modify corn genetics in the laboratory, endanger it further by extensive monoculture, and then wastefully turn it into ethanol. Corn is in an extraordinary number of products. We even use corn to make plastics. So a devastating corn blight or a severe drought would change our world in ways that would dwarf the effects of Great Irish Potato Famine.
In other words, corn can crash civilizations. It already has. The example I have in mind comes from Joseph Tainter’s classic Collapse of Complex Societies. I loaned my copy to friends, so I’m relying on memory here, but I think this recollection is fairly accurate even though I can’t remember specifics.
When the corn crops of this major ancient Native American civilization began to fail, the civilization failed to adapt. Although they had other food crops they could have switched to, they didn’t. They called themselves “the corn people,” and this over-identification cost them dearly. Much of their population perished or scattered. Major cities were already covered by jungle when Europeans “discovered” the “New World.”
So the early Native Americans were typically human. They deserve credit for slowly developing the unpromising little teosinte plant into modern corn. Their careful improvement of this food crop allowed the rise of complex civilizations based on corn. Unfortunately, when times changed, the stubborn, inflexible part of human nature set in and their reliance on what had always worked proved to be their downfall. Instead of ruling their system, they let their system control them until it collapsed around them. So this is also a cautionary tale; for when their pattern of existence became unsustainable, they lacked the time or vision to change or modify their ways.
I wonder if “the fossil fuel” people will suffer the same fate.
Cassandra