Congo rubber is a commercial rubber most notable for its forced cultivation, under conditions of great human suffering, in the Congo Free State. According to a 1905 article (shortly after the peak of Congo production): The bosanga method is described in the 1907 Journal of the African Society (as noted in a preface and postscript by the editor, a vastly more pleasant description than the outraged accounts of the Congo Reform Association a few years previous):
| Entity | Attribute | Value | Rank |
|---|