The Football War (La guerra del fútbol, in Spanish), also known as the 100-hours War, was a five-day war fought by El Salvador and Honduras in 1969. It was caused by political conflicts between Hondurans and Salvadorans, namely issues concerning immigration from El Salvador to Honduras. These existing tensions between the two countries coincided with the inflamed rioting during the second North American qualifying round for the 1970 FIFA World Cup; on 14 July 1969, the Salvadoran army launched an attack against Honduras. The Organization of American States negotiated a cease-fire which took effect on 20 July, with the Salvadoran troops withdrawn in early August. El Salvador ended up going to the 1970 FIFA World Cup1970 FIFA World Cup, where they failed to advance from the Group Stage.