What is the 10/40 Window and why is it emphasized in PWCM?

• A. A region roughly between 0 and 10 degrees north latitude
• B. A region roughly between 60 and 70 degrees north latitude
• C. A window defined by time rather than geography
• D. A region roughly between 10 and 40 degrees north latitude containing many unreached populations; emphasized because it concentrates areas with the least gospel access and church-planting opportunities.

Answer: (D)

The 10/40 Window is a missiology framework that identifies a broad band of the globe roughly between 10 and 40 degrees north latitude. This geographical focus matters because it contains a large share of the world’s unreached peoples—groups with little or no access to the gospel and few healthy, Christian churches. In Perspectives on the World Christian Movement, this emphasis comes from prioritizing where gospel access is most limited and where sustained, strategic church-planting efforts can have the greatest impact. It’s about geography and opportunity, not a time frame, guiding prayer, Mobilization, and mission planning toward areas with the darkest reach of the gospel and the strongest potential for growth through deliberate outreach.