State, nation & nation-state

Three terms that are easily confused but mean different things:

• State — a political and legal unit with a defined territory, a permanent population, a government and the capacity to enter relations with other states.
• Nation — a community of people who feel bound together by a shared identity (language, culture, history), whether or not they have their own state.
• Nation-state — where the boundary of the state broadly coincides with that of a single nation, so most citizens share a national identity.

Watch out: few states are perfect nation-states. Many are multinational (containing several nations) and some nations (e.g. stateless peoples) are spread across several states.

Sovereignty & territorial integrity

Sovereignty is the supreme authority of a state to govern itself and its territory without outside interference. It has two faces:

• Internal sovereignty — the state is the highest authority within its borders.
• External sovereignty — other states recognise its independence and right to run its own affairs.
• Territorial integrity — the principle that a state's borders are inviolable and should not be changed by force.

Foundational idea: the modern system of sovereign states is often traced to the Peace of Westphalia (1648), which established the principle that states are equal and should not interfere in one another's internal affairs.

State or nation?

Borders, frontiers & their types

A border is a precise line separating two states. A frontier is a broader, often sparsely settled zone between them. Geographers classify borders in two ways:

• By shape: natural (physical) borders follow features such as rivers, mountains or coastlines; geometric borders are straight lines along latitude or longitude.
• By age relative to settlement: antecedent (drawn before an area was settled), subsequent (evolving with cultural patterns), superimposed (imposed on an existing cultural landscape, ignoring local groups) and relict (no longer a functioning border but still visible in the landscape).

Why it matters: superimposed borders — for example many drawn during colonial rule — cut across ethnic and cultural groups, which can sow long-running tension and conflict.

Name that border

How borders are defined & contested

Borders are agreed, marked and managed in stages, and disputes can break out at any of them:

• Defining — a boundary is defined in a treaty, delimited on a map and demarcated on the ground with markers or fences.
• Managing — states control crossings through customs, security and, increasingly, physical barriers.
• Maritime boundaries — the UN Convention on the Law of the Sea (UNCLOS) grants states a territorial sea and an Exclusive Economic Zone (EEZ) of up to 200 nautical miles, but overlapping claims to seas and their resources are often disputed.

Contested territory: disputes arise over land and sea where borders are unclear, where resources are valuable, or where a superimposed border divides a people. Such disputes are a key trigger for conflict.

Match the description to the term

Tap a description on the left, then its matching term on the right.

Hard, soft & smart power

States exert influence through different kinds of power:

• Hard power — coercion through military force or economic sanctions: getting others to do what you want by threat or payment.
• Soft power — attraction and persuasion through culture, values, aid and diplomacy: getting others to want what you want.
• Smart power — the skilful combination of hard and soft power to suit the situation.

Hard, soft or smart?

Tap a lever of influence, then tap the type of power it shows.

Geopolitics, hegemony & balance of power

Geopolitics studies how geography and power shape relations between states. Two key ideas:

• Hegemony — the dominance of one state (or group) able to set the rules of the international system through a mix of hard and soft power.
• Balance of power — a distribution of power in which no single state can dominate. States form alliances to counterbalance a rising rival and preserve stability.
• Polarity — the system may be unipolar (one dominant power), bipolar (two blocs) or multipolar (several centres of power), each with different risks.

Evaluate: a stable balance of power can deter conflict, but a shifting balance — as a hegemon declines and rivals rise — is often when tension and disputes over territory increase.

Reading the system

Supranational & international governance

States pool or coordinate power through bodies that operate above or between them:

• United Nations (UN) — an intergovernmental body promoting peace and cooperation; members keep their sovereignty.
• European Union (EU) — a supranational body to which members transfer some sovereignty (e.g. over trade and free movement) in return for shared benefits.
• Alliances such as NATO — a collective-security pact in which members agree to defend one another.

Key distinction: intergovernmental bodies (like the UN) rely on cooperation between sovereign states, while supranational bodies (like the EU) can make decisions that bind members — a real transfer of sovereignty.

Your turn — population density

Your turn — percentage change

Your turn — power ratio

Challenges to the nation-state

The nation-state faces pressure from within and from disputes over territory:

• Self-determination — the principle that a people has the right to decide its own political status and governance.
• Separatism & secession — a region seeking greater autonomy or full independence from the existing state.
• Contested territories — land or sea claimed by more than one state, including disputed maritime boundaries over resource-rich waters.

Tension in principle: self-determination (the right of a people to govern itself) can clash directly with territorial integrity (a state's right to keep its borders whole). Global governance must weigh the two.

Naming the challenge

Sovereignty vs globalisation

Globalisation challenges the traditional idea of the sealed, sovereign nation-state:

• Flows across borders — trade, capital, migration and information move ever more freely, so states have less control over their own economies and cultures.
• Powerful non-state actors — transnational corporations and international bodies can influence or constrain national policy.
• Pooled sovereignty — states join supranational bodies and treaties, trading some independence for shared gains.

Balanced judgement: globalisation has not made the state obsolete. States still control borders, laws and force, and global governance depends on them. The question is how far sovereignty is being reshaped rather than removed.

The big ideas to know

You have covered the whole of Power and Borders within Global Governance. Press Finish to see your score.