What is the 10/40 Window?

   Have you ever heard of the 10/40 Window?  

The 10/40 Window is the rectangular area of North Africa, the Middle East, and Asia approximately between 10 degrees north and 40 degrees north latitude. The 10/40 Window is often called “The Resistant Belt”… The original 10/40 Window included only countries with at least 50% of their land mass within 10 and 40 degrees north latitude. The revised 10/40 Window includes several additional countries that are close to 10 or 40 degrees north latitude and have high concentrations of unreached peoples.  ~ Joshua Project 

Facts about the 10/40 window

  • The 10/40 Window is home to the majority of the world’s unevangelized countries.
  • The main religions that are in that area are
    •  Islam
    • Buddhism 
    • Hinduism 
  • There are a good number of non-roman scripts in that area.
    • A roman script is like the characters that we use in English. 
    • A non-roman, or complex script is like Arabic or Thai. 
    • If you are interested in how computers handle complex scripts click here. (This presentation will need flash.)
  • The 10/40 Window is home to some of the largest unreached people groups in the world.

10/40 Window – Joshua Project – The Joshua Project has an article that goes further in depth about the 10/40 Window.



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