Institutions are the rules; the state is the organisation that is supposed to make many of them stick. But states differ enormously in their ability to do anything at all — to tax, to enforce a contract in a remote district, to deliver a vaccine, to count their own population. This capacity, not just the formal rules, determines what policy is even possible. A government can legislate a brilliant tax; if it cannot administer it, the law is theatre.
Weber's definition
The monopoly on legitimate violence
Max Weber (1919): the state is 'the human community that successfully claims the monopoly of the legitimate use of physical force within a given territory'. Two words carry the weight. Monopoly — no competing armed authority (warlord, militia, mafia) within the borders. Legitimate — the population accepts the state's right to use force, so compliance is mostly voluntary and policing is affordable. Where either fails, you do not have a functioning state, whatever the constitution says.
Where states come from: the bellicist theory
Charles Tilly's famous compression — 'war made the state, and the state made war' — is the leading theory of how strong states emerged in Europe. Rulers needed money to fight; raising money required a tax apparatus, which required a bureaucracy, censuses, courts, and bargains with taxpayers who extracted rights (parliaments) in exchange for revenue. External military competition forged internal administrative capacity. The European state was a by-product of five centuries of war.
The theory's value for Africa is in the contrast. Tilly's mechanism largely did not operate. Borders were drawn by colonial powers and frozen by the OAU in 1964, so states rarely faced the existential interstate war that forces capacity-building. Many African states never had to bargain with their populations for tax revenue because they had an alternative: customs duties, resource rents, and aid. A state financed by an oil terminal or a donor does not need to build the broad fiscal apparatus that war-driven taxation forced on Europe — and so it often doesn't.
The three capacities
Tim Besley and Torsten Persson (Pillars of Prosperity, 2011) formalised state capacity as investments a state makes — or fails to make — over time:
- Fiscal capacity — the ability to raise revenue: tax administration, registries, withholding systems, the reach to tax incomes and not just borders. Measured crudely by the tax-to-GDP ratio.
- Legal capacity — the ability to enforce contracts and property rights: functioning courts, land registries, a police force that protects rather than preys.
- Collective capacity — the ability to provide public goods and coordinate: deliver roads, public health, and education across the whole territory.
Capacity is an investment, not a given
Besley-Persson's central insight: a state's capacity today is the accumulated result of past investments in administration, and those investments are themselves political choices. An elite that expects to hold power and benefit from a productive economy invests in capacity; an insecure or predatory elite does not, because capacity it builds today may be captured by a rival tomorrow. Low capacity is often an equilibrium choice, not merely a misfortune.
Why African states under-penetrate territory
Jeffrey Herbst (States and Power in Africa, 2000) added geography. Broadcasting authority over distance is expensive, and it gets cheaper the denser the population. Much of Africa is characterised by low population density over large areas, which historically made it costly for any central authority to project power into the hinterland — easier to control the capital, the port, and the mines than the whole map. Colonial and post-colonial states inherited this problem: authority is real in the centre and thin at the periphery. The result is the familiar pattern of a capable capital and a near-absent state in remote districts.
Capacity and the limits of policy
The tax-to-GDP ratio is the single best summary statistic of fiscal capacity, and it is the binding constraint behind much African policy. Rich countries collect 35–45% of GDP in tax; many African economies collect 12–18%. That gap is not mainly a matter of rates — it is the state's limited reach into a largely informal economy it cannot see. Every ambitious spending plan, every universal-provision proposal, every counter-cyclical stimulus runs into the same wall: a state that cannot reliably tax cannot reliably spend, borrow against future revenue, or deliver at scale. Capacity is the precondition for the rest of public economics.
Exercise
Two neighbouring jurisdictions have identical laws on the books. In jurisdiction A, the property-rates law is enforced: 70% of landowners pay, the registry is accurate, and defaulters are taken to functioning courts. In jurisdiction B, the same law yields 15% compliance, the registry is a decade out of date, and the courts are unusable. (1) Using Weber and Besley-Persson, explain what jurisdiction B lacks — be specific about which capacities. (2) Why might B's political leadership rationally choose not to fix this, even though more revenue would let them spend more? (3) A donor offers to fund new tax-collection software for B. Drawing on the institutions-vs-organisations distinction from the previous module, predict the likely result and state what would have to change for the software to work.