Dr. Donald A. McGavran proposed the concept of a “Homogeneous Church” in the 1970s. Different missions agencies have echoed this concept and joined hands to strategically bring the Gospel to the “Least Reached People Groups” or “Unreached People Groups” in order to finish the Great Commission within the shortest amount of time! Effective Evangelization happens when the Gospel can be spread smoothly among the largest number of people, without cultural, linguistic and geographical barriers.
Source: Robb, John D. Focus! The Power of Group Thinking. Monrovia, USA: MARC, 1989.