 A combination of cheap oil from the Persian Gulf and the Middle East and increased geopolitical peace would lead to fewer advancements in alternative fuel sources.Between 1973 and 1979 a fuel crisis driven by geopolitical conflict would again revive the need for alternative fuels.The Organization of the Petroleum Exporting Countries (OPEC), made substantial cuts in exports to non-OPEC nations leading to severe increases in oil prices, which prompted Europe to renew its search for biofuels.