A Flexible Constitution is one which can be easily amended. Many political scientists define a Flexible Constitution as one in which the Constitutional law can be amended in the same way as an ordinary law is made by the Legislature. Britain presents a classic example of a Flexible Constitution. The Rigid Constitution is one which cannot be easily amended. Its method of amendment is difficult. For amending it, the Legislature has to pass a proposal by a specific, usually big majority of 2/3rd or 3/4th or absolute majority, i.e., 51% of votes. The American Constitution is a classic example of Rigid Constitution.