The presidential system of government is a type of government in which most executive powers are vested in the President who is the chief executive (Head of State and Head of Government). The system was originally derived from the British monarchs of the 18th century who were very powerful.

Why Economics is a Science? | Economics is called a science subject because it uses scientific measures to explain, observed phenomena and predict the outcome of future events. This scientific method of observation is generally referred to as inductive method.