The Green Beans belong to the Fabaceae family and subspecies of the Papilionaceae. They need a temperate climate, tropical or subtropical to grow. Green beans are the beans and pods inside are the seeds that grow and dry, become dry beans or kidney beans. Take many forms: flat, round or heart-shaped or cord-shaped and eight. The green beans have been cultivated for 5,000 years. They are from Mexico and Peru, although some believe it originated in Asia, India and China. The truth is that the Spanish conquistadors discovered them when they came to Mexico in the sixteenth century brought them to Spain. From Spain it spread its use to the rest of Europe. Until the nineteenth century did not begin to eat the green pod, ate only seed or dry bean. Currently, he is one of the most cultivated and consumed vegetables worldwide, so tasty they are and their important properties.