Systems of Government Explained — Unitary, Federal, Confederal & More (JAMB/WAEC)
A system of government describes how political power is structured and distributed within a country — both how power is divided between central and regional authorities, and how power is shared between the executive and legislative branches.
This topic is foundational in JAMB and WAEC Government, since it introduces the basic categories that later topics (like Nigeria’s own constitutional history) build on. This lesson covers unitary, federal, and confederal systems, along with presidential and parliamentary systems, with clear definitions and examples.
Quick takeaways
- Systems of government can be classified by how power is distributed geographically (unitary, federal, confederal) or by how power is shared between branches (presidential, parliamentary).
- A unitary system concentrates power in a central government, which may delegate limited authority to regional units.
- A federal system divides power constitutionally between a central government and regional (state) governments, each with defined areas of authority.
- A confederal system is a loose association of independent states that retain most of their sovereignty, cooperating on limited shared matters.
- Nigeria currently operates a federal system of government with a presidential system of executive power — a combination worth knowing precisely, since exam questions often test this exact classification.
What is a unitary system of government?
A unitary system is one in which political power is concentrated in a central government, which may create or delegate limited authority to regional or local governments, but retains the ultimate power to alter or revoke that authority at will.
Regional units in a unitary system do not have constitutionally guaranteed independent powers — their authority exists because the central government allows it. The United Kingdom is a commonly cited example of a unitary system.
What is a federal system of government?
A federal system is one in which political power is constitutionally divided between a central (federal) government and regional (state or provincial) governments, with each level having defined areas of authority that cannot simply be overridden by the other.
This division is typically entrenched in a written constitution, giving regional governments a genuine, protected degree of independence. Nigeria, the United States, and Canada are commonly cited examples of federal systems.
What is a confederal system of government?
A confederal system is a loose association of largely independent, sovereign states that voluntarily cooperate on specific shared matters — such as defense or trade — while retaining most governing authority at the individual state level. Unlike a federal system, a confederal central authority typically has very limited power and depends heavily on the willing cooperation of its member states, since it usually cannot directly enforce decisions on them. Confederations are relatively rare and tend to be less stable over time than federal systems, often evolving into either a tighter federation or dissolving entirely.
What is the difference between a presidential and a parliamentary system?
While unitary, federal, and confederal systems describe how power is distributed geographically, presidential and parliamentary systems describe how power is distributed between the executive and legislative branches:
- Presidential system — the president is both head of state and head of government, elected separately from the legislature, and serves a fixed term independent of legislative confidence (e.g., the United States, Nigeria since 1979)
- Parliamentary system — the head of government (usually a prime minister) is drawn from and remains accountable to the legislature, and can be removed through a vote of no confidence; the head of state (a president or monarch) is often a separate, largely ceremonial role (e.g., the United Kingdom, Nigeria from 1960–1966)
What system of government does Nigeria currently operate?
Nigeria currently operates a federal system of government, dividing power between the federal government and 36 state governments, combined with a presidential system of executive power, in which the president serves as both head of state and head of government, elected separately from the National Assembly.
This specific combination — federal plus presidential, is worth learning precisely, since exam questions frequently test this exact classification rather than treating “federal” and “presidential” as interchangeable terms.
Common mistakes students make with this topic
- Treating “federal” and “presidential” as describing the same thing, when one refers to geographic power distribution and the other to executive-legislative relations
- Confusing a federal system (constitutionally protected regional power) with a unitary system that has merely delegated some local authority
- Assuming a confederal system is simply a “weaker” federal system, rather than understanding it as fundamentally different in how much sovereignty member states retain
- Forgetting that Nigeria’s system has changed over time — from a parliamentary system (1960–1966) to a presidential system (from 1979 onward)
Frequently asked questions
Q: What is the difference between a unitary and a federal system of government? In a unitary system, political power is concentrated in a central government that may delegate limited authority to regions, while in a federal system, power is constitutionally divided between a central government and regional governments, each with protected areas of authority.
Q: What is a confederal system of government? A confederal system is a loose association of largely independent, sovereign states that cooperate voluntarily on specific shared matters, while retaining most governing authority at the individual state level.
Q: What is the difference between a presidential and a parliamentary system? In a presidential system, the president is both head of state and head of government, elected separately from the legislature, while in a parliamentary system, the head of government is drawn from and accountable to the legislature, and can be removed through a vote of no confidence.
Q: What system of government does Nigeria currently practice? Nigeria currently practices a federal system of government combined with a presidential system of executive power, dividing authority between federal and state governments while having a president who serves as both head of state and head of government.
Want to see how Nigeria arrived at this exact system? Read our Constitutional Development lesson →
This is one topic from our full JAMB & WAEC Government course — see everything covered →
