 Complete the following phrase:  Today, many Muslim countries have incorporated Islamic law in part into their legal systems. Certain Muslim states have declared Islam to be their state religion in their constitutions, but do not apply Islamic law in their courts. Islamic states which are not Islamic monarchies are usually referred to as Islamic republics, such as the Islamic republics of Afghanistan, Iran, Pakistan and Mauritania. Pakistan adopted the title under the constitution of 1956; Mauritania adopted it on 28 November 1958; and Iran adopted it after the 