Given that islam is one of the major world religions, identify four ways in which islam has spread to other parts of the world.

Islam has spread to other parts of the world in numerous ways. In the early years of the religion it spread to Africa and even into Spain through the control of the Islamic Caliphate. The religion also spread through trade routes to West Africa and Asia. The religion in recent years has been spread through the migration of Muslims around the world and also the increase in the interconnectedness of people through media and the internet.