Why Do Tiny Countries Still Exist? Microstates Explained

Look at a map of Europe in 1700 and the familiar countries are there, but so are hundreds of other things: prince-bishoprics, free cities, tiny duchies, mountain republics, papal enclaves. Two centuries of consolidation removed nearly all of them. Germany alone went from a patchwork of hundreds of units to a single state.

And yet a handful of very small sovereign states are still on the map, some with fewer residents than a medium-sized town. The interesting question is not that they are small. It is why the process that swallowed their neighbours stopped at their borders. This piece looks at that structural question and stays away from present-day political argument.

What counts as a microstate

There is no legal definition, only a working one: a fully sovereign state with a very small population and territory, which nonetheless controls its own membership of international bodies, its own laws and its own borders. In continental Europe the standard list is Andorra, Liechtenstein, Monaco, San Marino and Vatican City, with Malta and sometimes Luxembourg treated as the next size up.

The category is worth distinguishing from two things it resembles. A dependency such as Gibraltar or Greenland is not sovereign, whatever autonomy it holds. And an enclave is a matter of shape rather than size, a topic we cover in enclaves and exclaves explained. San Marino happens to be both a microstate and an enclave. Andorra is neither enclaved nor an island.

Reason one: geography that was not worth the trouble

The commonest thread is terrain. Andorra sits in high Pyrenean valleys. Liechtenstein occupies a narrow Alpine strip on the upper Rhine. San Marino is built on and around Monte Titano, a limestone ridge rising out of the Romagna plain. Monaco is a rock on a cliff coast with almost no hinterland.

Mountainous ground has two properties that protect small polities. It is expensive to occupy, since supply routes are few and defenders hold the high approaches, and it is usually poor, so the revenue gained from taking it barely covers the cost of holding it. A ruler weighing conquest against subsidy will often choose subsidy. The broader version of this dynamic appears in mountains as borders.

Compare the flat, fertile, densely populated ground of the Low Countries and northern Italy, where small states clustered and then vanished. Open terrain is cheap to cross and profitable to keep, which is exactly the wrong combination if you wish to remain independent.

Reason two: a protector rather than an owner

Every surviving European microstate spent long periods under the shadow of a larger power, and that relationship is the reason it still exists rather than the threat to it. A strong neighbour that guarantees your independence has removed the incentive for anyone else to take you, while avoiding the cost and the diplomatic friction of annexation.

Andorra's arrangement is the most unusual: from a thirteenth century settlement of a dispute, sovereignty was shared between two co-princes, the Bishop of Urgell and a French title that eventually passed to the French head of state. Because neither party could absorb it without provoking the other, neither did. Monaco's independence has long rested on treaty relationships with France, Liechtenstein's on close ties first to Austria and later to Switzerland, and San Marino's on a series of guarantees including papal recognition of its liberty.

This is the buffer logic operating at miniature scale, and the mechanics are the same as those set out in what is a buffer state: a cushion is cheaper than a shared frontier.

Reason three: dynastic and legal accident

Some microstates survive because of how their sovereignty was acquired. Liechtenstein is the clearest case. The family purchased two small territories in the early eighteenth century specifically because they were held directly of the Holy Roman Emperor, which qualified the owner for a seat in the imperial diet. The lands were bought for their legal status, and that status later hardened into statehood when the empire dissolved.

San Marino's claim runs through a monastic foundation and a long practice of self government, reinforced by a habit of shrewd neutrality. Vatican City is the most recent in its present form, created by the 1929 Lateran treaties to give the papacy a small sovereign territory after the Papal States were absorbed into unified Italy: a microstate produced deliberately, to resolve a problem.

None of these origins is grand. They are paperwork, purchase and compromise, which is generally how borders get made.

Reason four: the slow move from conquest to fixed borders

The deepest cause is a change in how sovereignty itself was understood. The settlements of 1648 began normalising the idea that rulers held defined territories and did not interfere in each other's internal affairs, a shift we describe in the Peace of Westphalia explained. Later congresses continued the pattern of adjusting borders by negotiation among powers rather than purely by force.

Over the following centuries, and especially through twentieth century international law and institutions, territorial change by conquest moved from ordinary statecraft to something the system resists. For very small states this is decisive. They cannot defend themselves militarily, so their security rests almost entirely on the norm that recognised borders are not redrawn by force, plus the practical calculation that absorbing them would gain little and cost a great deal of goodwill.

Consolidation also had a moment and then passed. The nineteenth century unifications of Germany and Italy were the great absorber of small European states, and the units that happened to sit outside those projects, in the Pyrenees, the Alps or on a Ligurian rock, were left standing when the wave receded. The same era's appetite for building states from scratch is explored in why countries build new capitals.

How microstates make a living

A state with no farmland, no minerals and a tiny labour force needs an economy that does not depend on territory. In general terms, the surviving European microstates have converged on a similar set of answers.

• Financial and professional services, where a separate legal and tax jurisdiction has value in itself. These regimes have been substantially reformed in recent decades under international transparency standards.
• Tourism, which turns small size into an attraction: a compact historic centre, a mountain setting or a coastline within a short drive of a large market.
• Niche and symbolic exports, from postage stamps and collector coinage to specialised light manufacturing, dental and precision products in Liechtenstein being a well known example.
• Integration with the neighbour's economy, typically through currency arrangements, customs agreements and open borders, so that residents and businesses get the benefits of a large market while retaining sovereignty.
• Hosting and administration, most distinctly in Vatican City, whose function is institutional rather than commercial.

The common principle is that sovereignty, not land, is the productive asset. Being able to set your own rules is worth something to people who live elsewhere.

Island microstates are a different story

It is worth separating the European cases from the many small island states in the Pacific, Caribbean and Indian Ocean. Their independence is mostly a product of twentieth century decolonisation rather than survival through European consolidation, and their protective geography is distance and water rather than mountains.

Their economic pressures also differ, weighted toward fisheries, shipping registration, remittances, tourism and climate exposure. Grouping them with Andorra and San Marino under one label obscures more than it reveals.

What microstates teach you about maps

The useful takeaway is that borders are not a record of who was strongest. They are a record of what was worth taking, what was cheap to protect and what nobody could take without upsetting someone else. Microstates are the places where those three calculations happened to align in favour of staying small.

That way of reading a map, as a set of past decisions rather than a fixed picture, is what our interactive Turning Points scenarios are built around, and you can see the wider subject range under topics. Disclosure: MindSnap is our app.