How did the embargo by the organization of petroleum exporting countries contribute to stagflation problems in the early 1970s?

The embargo by the organization of petroleum exporting countries contributed to stagflation problems in the early 1970s in that it drove oil prices way up, which increased inflation on the prices and led to the "cutting back" of oil use in the west. 

"The Marshall Plan (officially the European Recovery Program, ERP)was an American initiative to aid Western Europe, in which the United States gave over $13 billion (nearly $110 billion in 2016 US dollars) in economic assistance to help rebuild Western European economies after the end of World War II."

So in short, The Marshall Plan was implemented to repair the damage to European countries from World War II.