Federalism vs. Unitary State: Key Differences! A Comprehensive Comparison Using the United States, Switzerland, and Japan

Countries around the world can be broadly divided into federal states and unitary states, depending on how political power is divided between the central and regional governments. What are the differences between these two systems, and what are the advantages and disadvantages of each?

1. What Is Federalism?

“A Great Union of Smaller States”

Federalism is a political system in which sovereign governmental powers are constitutionally divided between the federal government and regional governments, such as states or provinces.

Simply put, it is a system in which several states, each possessing substantial powers of its own, unite to form a single country.

Basic Structure

The federal government is generally responsible for matters concerning the country as a whole, such as foreign affairs, national defense, and monetary policy. Meanwhile, regional governments, such as states, exercise substantial autonomy over matters closely related to local communities, including education, policing, local administration, and various areas of civil law.

Key Characteristics

In the United States, each state has its own legislative authority, which means that laws can differ considerably from one state to another. As a result, an activity that is legal in one state may be illegal just across the border in a neighboring state.

Examples of Federal States

Major federal states include the United States, Germany, Canada, Australia, and Brazil. Federalism is often adopted by countries with large territories or significant historical, cultural, or regional diversity.

2. What Is a Unitary State?

“One Center, One Unified System”

A unitary state is a political system in which sovereignty and the ultimate authority to govern are concentrated in a single central government.

Basic Structure

Local governments, such as the Seoul Metropolitan Government and Gyeonggi Province, exist and exercise a certain degree of local autonomy. However, they operate within the authority granted by the central government and national law. They do not possess their own sovereignty or the authority to enact national-level laws independently.

Key Characteristics

Because the same national laws and institutions generally apply throughout the country, citizens are subject to the same basic legal and administrative system regardless of where they live.

Examples of Unitary States

Major examples of unitary states include South Korea, Japan, the United Kingdom, and France. Unitary systems are often found in countries with relatively compact territories or in countries that have developed a shared history and culture under a unified political system over a long period of time.

4. Advantages and Disadvantages

Which System Is Better?

There is no single correct answer. Every country faces different geographical, historical, and social circumstances, so the political system that works best for one country may not necessarily work well for another.

The Strengths and Limitations of Federalism

Advantages: Federalism allows countries with large territories to accommodate regional differences and reflect a wide range of local interests and voices. It can also help reduce tensions among ethnic minorities and between regions by granting them substantial autonomy.

Disadvantages: During natural disasters or national crises, disagreements between the federal government and state governments can sometimes delay decision-making and coordinated responses.

The Strengths and Limitations of a Unitary State

Advantages: A unitary system allows the central government to make decisions relatively quickly. Its unified administrative structure can also facilitate nationwide infrastructure projects and enable rapid responses to national crises.

Disadvantages: Because political and administrative authority tends to be concentrated in the central government, unitary states may be more vulnerable to excessive concentration of population and resources in the capital region, regional depopulation, and disparities between regions.

5. Three Reasons Why Switzerland Is Federal Despite Its Small Size

Despite covering only about 41,285 square kilometers—less than half the size of South Korea—Switzerland operates under a federal system.

This is largely because Switzerland originated as a voluntary alliance of regional communities with different historical backgrounds, religions, and languages that joined together to defend themselves against external threats.

This historical background helps explain why Switzerland continues to maintain strong local autonomy and a federal political system today.

(1) “We Were Originally Separate Regions”

— A Union Created by Independent Communities

The origins of the Swiss Confederation can be traced back to 1291. At that time, three self-governing communities in the Alpine valleys—Uri, Schwyz, and Unterwalden—agreed to support one another against pressure from outside powers, particularly the Habsburg dynasty.

Their original goal was not to create a single unified state. Rather, they formed a military and political alliance to protect their own autonomy and independence. Over time, other regions joined the alliance, gradually expanding the Swiss Confederation.

For centuries, however, the individual regions retained a considerable degree of independence. Each maintained its own political institutions, laws, and administrative systems, and they sometimes operated almost like separate states.

It was not until 1848 that Switzerland adopted a federal constitution and established the basic framework of the modern federal state that exists today. In other words, Switzerland was not a country in which a central government first divided the nation into administrative regions. Instead, independent regional communities came first and later created a central government when they found it necessary to do so.

(2) Four Languages and Religious Diversity

— Federalism Was Necessary Because the Regions Were Different

Switzerland is not a culturally homogeneous country united by a single language and tradition. Depending on the region, people speak German, French, Italian, or Romansh, and each linguistic region has developed its own historical and cultural traditions.

German is spoken by the largest share of the population, while French is widely spoken in western Switzerland and Italian in the south. Romansh also has official recognition and continues to be used in parts of the country.

Switzerland has also long been home to both Catholic and Protestant communities. Historically, these religious differences sometimes developed into serious political conflicts and even armed confrontation.

In a country where language, religion, and regional identities are so deeply intertwined, an attempt by the central government to impose a single language, culture, or religious standard could have generated severe conflict.

Rather than trying to eliminate these differences, Switzerland chose to allow its regions to preserve their own languages, cultures, and institutions. Federalism therefore became a practical way for diverse communities to coexist peacefully within a single country.

(3) Strong Direct Democracy and Cantonal Pride

Today, Switzerland consists of 26 cantons. Although cantons may appear similar to provinces or other regional governments in a unitary state, they possess far greater political authority and autonomy.

Each canton has its own constitution, government, parliament, and courts, and exercises considerable authority over areas such as education, policing, healthcare, and taxation. Tax systems and tax rates also vary from canton to canton, sometimes creating competition among regions.

Switzerland also has a deeply rooted tradition of direct democracy, based on the principle that local residents should have a direct say in matters affecting their own communities. Important policies and laws are frequently decided through referendums and popular votes.

In some cantons, the traditional practice of Landsgemeinde, or open-air citizens’ assemblies, continues to this day. Citizens gather in a public square and directly express their political choices, preserving one of the oldest forms of direct democracy in the modern world.

Within this political culture, a unitary system that concentrates most governmental authority in the central government would be difficult to reconcile with Switzerland’s deeply rooted traditions. For the Swiss, a canton is not merely an administrative division but a political community with its own long history and distinct identity.

The Core Principle of Swiss Federalism

Swiss federalism was not created simply to improve administrative efficiency. Rather, it emerged as a political compromise that allowed communities with different languages, religions, and historical traditions to coexist within a single country while preserving a substantial degree of autonomy.

Instead of eliminating regional differences in pursuit of complete uniformity, Switzerland chose to recognize those differences and encourage cooperation in areas of common interest.

Ultimately, the central principle of Swiss federalism can be summarized as follows:

“We do not all have to become the same in order to become one.”

6. Was Edo-Period Japan a Federal State?

The political system of Edo-period Japan shared several characteristics with modern federalism. However, historians generally do not classify it as a federal system. Instead, it is usually described as a form of centralized feudalism or, more specifically, Japan’s distinctive bakuhan system (幕藩体制), in which the Tokugawa shogunate (bakufu) coexisted with numerous semi-autonomous domains (han).

Why, then, did Edo-period Japan sometimes appear to be a collection of separate states? And how did the bakuhan system differ from modern federalism? To answer these questions, we need to examine its historical background and political structure in greater detail.

Why Did the Domains Seem Like “Separate Countries”?

— Similarities to Federalism

During the Edo period, Japan was divided between territories directly controlled by the Tokugawa shogunate and roughly 260 domains (han, 藩) governed by individual daimyo.

The domains possessed such strong regional identities and autonomy that people sometimes referred to their own domain as their “kuni” (くに), a term meaning “country” or “province.”

Each domain established its own regulations and administrative institutions and maintained its own samurai forces and taxation system. Some domains even issued their own paper currency, known as hansatsu (藩札).

The movement of people was also subject to considerable restrictions. Travelers passing from one region to another could be required to present travel permits at checkpoints.

These characteristics made the individual domains appear, in some respects, almost like semi-autonomous states within a larger political order.

In this way, while the Tokugawa shogunate controlled foreign relations and the overall military order of Japan, individual domains exercised considerable autonomy over matters such as internal administration, finance, and justice. This decentralized structure of authority may appear similar in some respects to modern federalism, in which powers are divided between the federal government and state governments.

The Crucial Difference from Federalism

— Centralized Feudalism

Modern federalism is a political system in which multiple states are constitutionally guaranteed their respective powers and status within a single country. In contrast, the bakuhan system of Edo-period Japan was a form of centralized feudalism in which the shogun stood above the daimyo and exercised powerful authority over them.

If a daimyo disobeyed the shogunate or was considered a political threat, the shogun could order the confiscation of his domain through a measure known as kaieki (改易). The shogunate could also transfer a daimyo from one domain to another, a practice known as tenpō (転封).

This represents a fundamental difference from modern federalism. In a modern federal state, the federal government generally cannot arbitrarily remove the governor of a particular state or unilaterally alter a state’s territory at will.

One of the most important institutions used to control the daimyo was the sankin-kōtai (参勤交代), or alternate attendance system. Daimyo were required to alternate their residence periodically between their own domains and Edo, while their wives and heirs were generally required to remain in Edo.

This system strengthened the shogunate’s control over the daimyo while also imposing substantial financial burdens on them, making it more difficult for powerful domains to accumulate enough resources to challenge Tokugawa authority.

In the process, daimyo were required to spend enormous amounts of money on their processions and extended stays in Edo, making it more difficult for them to accumulate military resources or prepare a rebellion against the shogunate.

Moreover, the individual domains did not possess sovereignty in the modern sense. In a modern federal system, the respective powers of the federal and state governments are legally guaranteed by a constitution. The Edo-period bakuhan system, by contrast, operated on the basis of feudal relationships between the shogun and the daimyo, together with obligations of loyalty and service.

Edo-period Japan can therefore appear similar to a modern federal state because its individual domains enjoyed considerable autonomy. Unlike the states of the United States, however, the domains were not political units whose equal status and powers were constitutionally guaranteed.

Ultimately, Edo-period Japan can best be understood as a form of centralized feudalism in which individual domains operated almost like separate countries in many internal affairs, while the shogun retained the authority to determine the political fate of their feudal lords.

6. Conclusion: There Is No Single Right Answer—Every Country Faces Different Circumstances

So far, we have examined the basic concepts of federal and unitary systems, as well as the examples of the United States, Switzerland, and the bakuhan system of Edo-period Japan.

Federalism is more than simply a political system in which regional governments possess strong powers. It is often adopted by countries with vast territories, such as the United States, or by countries such as Switzerland, where communities with different languages, cultures, and religions must coexist within a single nation. One of the defining features of federalism is its attempt to preserve national unity while respecting the autonomy and distinct identities of different regions.

A unitary system, by contrast, has advantages in governing a country efficiently through a strong and unified central government. In countries such as South Korea, which has a relatively compact territory and a high degree of historical and cultural homogeneity, a unitary system can facilitate rapid decision-making and the development of a consistent nationwide administrative system.

Ultimately, neither system can be considered inherently superior to the other. Every country has its own unique history, culture, geography, and social composition.

What matters most is not whether a country adopts federalism or a unitary system, but whether its political institutions are well suited to its particular circumstances and historical background.

Just as people have different body types and therefore need clothes that fit them differently, countries have developed by adopting political systems that best suit their own circumstances. There is no single correct answer—only a system that fits each country best.