Constitution can be traditionally classified as follows,written constitution,unwritten constitution,flexible constitution, regid constitution,unitary constitution, federal constitution,monarchical constitution and republican constitution.
a written constitution is one that is written down in a single document, a written constitution is often amended or un amended from time to time. In a whole, no constitution is completely written down in one single document. This is because there may be a situation when some important aspect of a constitution may not be contained in the single book or document called constitution but may rather be found in an important supplementary particular a good example of a written constitution is Nigeria, USA etc.
this is the type of constitution that is not contained in one single document called constitution. It is important to note that some part of it is in an unwritten form and some of the part which is written are not written in a single documents, but in several documents r scattered form. Example of unwritten constitution includes Britain or United Kingdom.
this is the type of constitution that can be easily amended. It is very easy to change. A flexible constitution can be mended in the same manner in which laws are passed by parliament, the change or amended could be done through the ordinary law making process. Examples of countries with flexible constitution includes: Britain, new Zealand, Italy, Ghana ( in the first republic)
Rigid constitution :
a constitution is said to be rigid when its is amendment process or procedures is very difficult, it is a type of constitution which requires special and specified amendment procedures. This type of constitution cannot be amended through the processes of ordinary law making process. The process of amendment is also laid down in the constitution itself, the amendment must be approved by at least 2/3 majority of the members of the legislature or by a major votes of the entire electorate. Example of countries with rigid constitution includes: united states of America, Nigeria, Canada, Switzerland, Australia.
a unitary constitution is one in which the powers of the government resides at the centers, in other words all the government power belongs to central government. Note that unitary systems of government are the same in meaning. Therefore meaning, characteristics, advantages of a unitary constitution are the same with that of unitary government.
Federal constitution :
a federal constitution is one which the powers of government shared between the federal government and its component state unit. a very good example of federal constitution is that of Nigeria, in Nigeria there are 36 states which form one country with one general government in the capital. Each of the 36 state has it own state government. A state is not dependent on another state, each state is independent of the general government, the general government called the federal government cannot abolish a state government. The general government and the states derive their authority and life from the constitution, and only the constitution can kill them.