Jimmy Carter: The 39th President of the United States "The president of the United States functions in many capacities: head of state, head of government, commander in chief of the armed forces, and leader of the president's political party. The president is thus the single most unifying force in a political system in which power is highly dispersed, both within the government and between government and the people" (Grolier). The president has been a very strong leader in our country, in making decisions, to being a role model, for the interior of the country