According to the USDA, America grows and uses genetically modified varieties of corn, upland cotton, soybeans, alfalfa, canola, and sugar beets. These crops have been modified to be resistant to disease, pesticides, bad weather and other factors. Genetically modified crops are utilized to maximize yield and be as successful as possible in an environment full of challenges. Genetically modified crops were commercially introduced to the United States in 1996, and this agricultural advancement has grown since that time. Companies like Monsanto have developed and distributed genetically modified seeds for agricultural use. Many trusted research organizations have published articles on the environmental, economic, and social impact of genetically modified crops in America. GMO crops allow desirable traits of crops to be introduced and incorporated into the genetics of crops being grown. Research has been performed to test the food safety of GMO crops. There is a push to grow genetically modified crops for energy, food security, and environmental improvement purposes. Genetically modified crops continue to develop and the genetic changes made to these crops are beneficial to American agriculture.