The concept behind the 10/40 The Window forms a band encompassing Saharan and Northern Africa, as well as almost all of Asia (West Asia, Central Asia, South Asia, East Asia and much of Southeast Asia). Roughly two-thirds of the world population lived in the 10/40 Window, It is predominantly Muslim, Hindu, Buddhist, animist, Jewish, or atheist. The American 1040 Window Peoples simply refers to those people who have migrated to America, either by choice or as refugees. They are sometimes referred to as The Resistant Belt.