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What Is 10/40 window

The 10/40 window is the region of the world geographically located 10 degrees
north to 40 degrees north of the equator. It is where:

• More than 90 % of the world's un-reached people groups reside
• The majority of all Muslims, Buddhists, and Hindus live
• Less than 10% of the world's missionaries operate
• The poorest people in the world live