This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
World Vision began in 1950 out of the wreckage of the Korean War, founded by Robert Pierce, an American evangelist and relief worker, together with Kyung-Chik Han, a Korean pastor whose own congregation had fled south ahead of the fighting. Pierce had gone to Asia to preach and found instead a continent of orphaned and displaced children he felt no existing organization was positioned to help quickly enough; the organization he built with Han was meant to close that gap directly, sponsoring individual children rather than only funding institutions. Pierce later left World Vision's own leadership, and in 1970 founded a second major relief organization, Samaritan's Purse, making him one of very few individuals to have started two of the largest Christian humanitarian federations operating today.
What Pierce and Han built has grown into something considerably larger and more diffuse than either founder oversaw directly. World Vision International today operates as a federation of interdependent national offices active in more than 100 countries, with dual headquarters in Monrovia, California and London rather than a single command center, and a staff drawn from multiple Christian traditions and other faiths rather than one denomination. The interdenominational structure was not incidental; it is what let a relief effort started by one pastor and one evangelist scale into a federation spanning a hundred countries without requiring every national office to share a single ecclesial identity.