The Great Depression had a pronounced economic and political effect on South Africa, as it did on most nations at the time. As world trade slumped, demand for South African agricultural and mineral exports fell drastically. It is believed that the social discomfort caused by the depression was a contributing factor in the 1933 split between the "gesuiwerde" (purified) and "smelter" (fusionist) factions within the National Party and the National Party's subsequent fusion with the South African Party.