Introduction to Ibn Khaldun, a book of an encyclopedic nature in which Ibn Khalden deals with all the fields of knowledge from Sharia, history, geography, economics, urbanism, sociology, politics and medicine. It also dealt with human conditions, differences in their nature, the environment and their impact on man. He also addressed the development of nations and peoples, the emergence of the state, and the reasons for their collapse, focusing on the interpretation of this on the concept of nervousness. With this book, Ibn Khaldun preceded other thinkers to many opinions and ideas until he was considered the founder of sociology. The introduction can be summarized in a set of theories and founded by Ibn Khaldun to make him the true founder of sociology, contrary to what Western scholars claim that the true founder is the French Auguste Conte. They go and proceed according to specific laws, and these laws allow a degree of prediction of the future if they are studied and well done, and that this science (the science of urbanism as he called it) is not affected by individual incidents, but is affected by societies as a whole.
