The correct answer is OPEC embargo.
In 16th October 1973 the Organization of Petroleum Exporting Countries (OPEC) plus Syria, Egypt, and Tunisia decided not to export more oil to those countries that supported Israel during the Yom Kippur war, which confronted Israel against Syria and Egypt and where Israel was victorious. This measure included the US and Western Europe.
This political measure generated a big economic crisis known as the First Oil Shock and characterized by the increment of the oil price. This, added to the large dependence that the industrialized world had on oil, provoked great inflation and a reduction of the international economic activity.
