Soybean crop in East Asia as early as the beginning of the text record. There was evidence of soybean domestication in China between 7000 and BC, between Korea and Japan in the year of 3000 and BC in the year of the year of the year of the year 1000 to the year of the Korean in the year of 5000. They are now the main crops in the United States, Brazil, Argentina, India, and china. In the fermentation products such as fermented black beans (fermented black bean), river (China sauce), soy sauce, fermented black bean, natto, miso, soy sauce is a beneficial effect of the sanctity of considering crop rotation. Soybean was introduced into Africa at the end of the nineteenth century and is now widely distributed throughout the continent.