America is blessed with the most productive farmers and agricultural workers in the world. As Thanksgiving approaches, the United States has been graced with another year of plenty: food, fuel and fiber — all produced through the effort of American farm workers. Agriculture is the backbone of America: From bread on our tables to the shirts on our backs, U.S. farmers are responsible for feeding and clothing a nation of 310 million people. Here are a few of the faces whose toil made it happen in 2012.