The president is the leader of a country that is a republic, has democratic type of government or a dictatorship. In states with a presidential system of government, the president exercises the functions of head of state and head of government. Hope this answers the question.
If the demand will remain the same for the certain period of time then the supply decreases. The price will spike because the product has the less demand. <span> As supply increases, prices will move lower because the product is readily available. </span>
