Complex sentence: In the mid-twentieth century campaigns promoting the idea of Islamic patterns of economic thought and behavior began, and by the 1970s, Islamic economics had been introduced as an academic discipline in a number of institutions of higher learning throughout the Muslim world and in the West.
Split into simpler sentences: In the mid-twentieth century, campaigns began promoting the idea of specifically Islamic patterns of economic thought and behavior. By the 1970s, "Islamic economics" was introduced as an academic discipline in a number of institutions of higher learning throughout the Muslim world and in the West.