The book: Real estate mortgage and its role in the occurrence of the global financial crisis Author: Muhammad Nada Libdeh Year of publication: 2018 Specialization: Civil Law Publishing House: University Thought House About the book: Investing using mortgage money may cause a financial crisis or even a crisis, when Real estate prices drop for some reason, or when loans are provided by banks to customers who do not enjoy creditworthiness, (weak collateral), or the borrower stops paying his loan installments for any reason, or when mortgage debts are manipulated - securitized - by banks or companies Securitization and selling them to investors in all countries of the world on the basis that they are high-class forms that enjoy an unparalleled degree of safety, a process of selling illusion, or inflating the capital of banks and securitization companies; As a result of the adoption of usurious interest on their funds, there is an abyss and a terrible difference between the real and imaginary capital of these institutions, and pyramids of bad debts.