On October 19, 1973, immediately following President Nixonâs request for Congress to make available $2.2 billion in emergency aid to Israel for the conflict known as the Yom Kippur War, the Organization of Arab Petroleum Exporting Countries (OAPEC) instituted an oil embargo on the United States (Reich 1995).n October 19, 1973, immediately following President Nixonâs request for Congress to make available $2.2 billion in emergency aid to Israel for the conflict known as the Yom Kippur War, the Organization of Arab Petroleum Exporting Countries (OAPEC) instituted an oil embargo on the United States (Reich 1995).
Causes of Heart Disease. Heart disease occurs when the arteries and blood vessels that lead to the heart are blocked or not carrying blood correctly. When this happens, important nutrients, such as oxygen, cannot reach your heart.ou may not show symptoms of the disease at certain times. Heart disease is sometimes called âcoronary heart diseaseâ or âCHD.â It is the leading cause of death among adults in the United States, according to the National Heart, Lung, and Blood Institute (NHLBI).
The main causes of heart valve disease are: 1  being born with an abnormal valve or valves (congenital heart disease). 2  having had rheumatic fever. 3  cardiomyopathy-a disease of the heart muscle. 4  damage to the heart muscle from a heart attack. 5  getting older. 6  a previous infection with endocarditis.