(a) Constitution can be defined as the fundamental laws, rules, regulations, and other related elements according to which democratic states are expected to be governed. Or Constitution can be defined as a body of agreed rules and principles stating how the powers of governing a country are given and how these powers are to be shared. Or Constitution can be defined as a body of rules, laws, and regulations that states the rights, duties, and obligations of the citizens
(b) (i) Acts of parliament: The laws or enactments made by the Nigerian parliament are considered when drafting the Nigerian constitution.
(ii) Judicial precedents: The past judgments are at law courts are considered when drafting the Nigerian constitution.
(iii) Conventions: These are accepted political precepts and practices which often form a part of a country's constitution. They are considered when drafting the Nigerian constitution.
(iv) Constitutional conferences: These are meetings at which difficult constitutional issues are discussed and resolved in preparation for a new constitution. Decisions reached at such conferences are considered when drafting the constitution.
(v) History of the people: The history of people constituting a country is usually considered when drafting the constitution. Past political developments in the history of the people are a vital part of constitutional drafting.
(vi) Customs and traditions: Customs and traditions of people are considered when drafting the Nigerian constitution. These include beliefs, institutions, norms, and values of the people.
(vii) Past constitutions: Past constitutions and constitutions of other countries are considered when drafting the constitution.