United KingdomandPortugal
12 July 927 · 5 October 1143
Two sourced records set beside each other — the figures each nation publishes, and the events each chronicle records of the other. Compared, never graded.
12 July 927 — The monarchs of Britain recognise Æthelstan as king of the English
5 October 1143 — The Treaty of Zamora recognises Afonso Henriques as king
- Shared indicators
- 42
- Domains
- 9
- Crossed events
- 4
- Data through
- 2026-08-22
The figures, side by sideThe dossier duel
PRESS A ROW — BOTH SPECIMENS TURN OVER TO THEIR LABELS
Each figure is the same observation, with the same source, as on the two dossiers. Every value shows the year it was observed — vintages differ by indicator and nation. A “—” is an absence in the source data, never a zero. Metric names link to the world ranking; values open the figure on its own dossier.
Economy
- Observed 2025 / 2025 · figures compared, never graded
- Observed 2025 / 2025 · figures compared, never graded
- Observed 2025 / 2025 · figures compared, never graded
- Observed 2025 / 2025 · figures compared, never graded
Society
- Observed 2025 / 2025 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2025 / 2025 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
Governance
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
Health
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2023 / 2022 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
Education
- Observed 2021 / 2022 · figures compared, never graded
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2023 / 2023 · figures compared, never graded
- Observed — / 2011 · figures compared, never graded
Technology
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2017 / 2023 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
Geography
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2023 / 2023 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2021 / 2021 · figures compared, never graded
Resources
- Observed 2021 / 2021 · figures compared, never graded
- Observed 2021 / 2021 · figures compared, never graded
- Observed 2021 / 2021 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed — / 2025 · figures compared, never graded
Military
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2024 / 2024 · figures compared, never graded
- Observed 2020 / 2020 · figures compared, never graded
Entangled histories
4 events in which either nation’s sourced chronicle names the other — including under earlier names of the same state. Each is the same record, with the same sources, as on its own chronicle; nothing here was written for this page.
- 14 Aug 1385
Battle of Aljubarrota
After the death of Ferdinand I in 1383 left a daughter married to John I of Castile, the Cortes of Coimbra acclaimed John of Avis (6 April 1385). At Aljubarrota a smaller Portuguese army with English archers defeated Castile's much larger force and secured the crown.
War & Rupture · from the Portugal chronicle · The Age of Discovery · REFS 1 — Portugal-UK 650: The Anglo-Portuguese Alliance
- 9 May 1386
Treaty of Windsor
England and Portugal confirmed a 'perpetual league, friendship and confederation', later described by both governments as the oldest alliance still in force.
Politics & Power · from the Portugal chronicle · The Age of Discovery · REFS 1 — Portugal-UK 650: The Anglo-Portuguese Alliance
- 27 Nov 1807
Court flees to Brazil
As a French army invaded, the prince regent and royal court sailed for Brazil under British escort, moving the seat of the Portuguese monarchy to Rio de Janeiro.
War & Rupture · from the Portugal chronicle · Earthquake, Napoleon and the Loss of Brazil · REFS 2 — Peninsular War, John VI, king of Portugal
- 1808-1814
The Peninsular War
British, Portuguese and Spanish forces fought the French in the Iberian Peninsula, eventually expelling Napoleon's armies from Portugal and Spain.
War & Rupture · from the Portugal chronicle · Earthquake, Napoleon and the Loss of Brazil · REFS 1 — Peninsular War