The factor which affected the US economy during the 1970s is: A. stagflation
In the 1970s, an energy crisis was a major event that took place in the United States of America due to the oil embargo imposed on it by OPEC.
An oil embargo was imposed on the United States of America by the Organization of Petroleum Exporting Countries (OPEC) in 1973, based on its role in the Arab-Israeli War.
Consequently, the economy of the United States of America experienced stagflation such as:
