CORE —
EXTRACTED
EXTRACTED
THICKNESS ∝ EVENTS
← THE SECTION CUT · NORTH AMERICA
United States
38.0N 97.0W · 26 EVENTS · 9 DOMAINS
DECLARATION OF INDEPENDENCE · 4 JULY 1776
▼ PULL DOWN TO EXTRACT THE CORE
1945 – present · Superpower, civil rights, and the modern era
6 EVENTS · READ THE BED →
1954 · Brown v. Board of Education 1 REF
3 January 1959 · Alaska becomes the 49th state 4 REFS
1865 – 1945 · Reconstruction, industrial rise, and the World Wars
5 EVENTS · READ THE BED →
30 March 1867 · The Alaska Purchase 4 REFS
1868 · Fourteenth Amendment 1 REF
1815 – 1865 · Expansion, slavery, and the Civil War
4 EVENTS · READ THE BED →
1838 · Trail of Tears 1 REF
1861–1865 · American Civil War 1 REF
1763 – 1815 · Revolution and the founding of the Republic
4 EVENTS · READ THE BED →
4 July 1776 · Declaration of Independence 1 REF
1783 · Treaty of Paris 1 REF
1492 – 1763 · European colonisation and the Thirteen Colonies
4 EVENTS · READ THE BED →
1607 · Founding of Jamestown 1 REF
1620 · Pilgrims found Plymouth 2 REFS
c. 15,000 BCE – 1492 CE · Indigenous America before contact
3 EVENTS · READ THE BED →
c. 13,000 BCE · Peopling of the Americas 1 REF
c. 1100 CE · Cahokia at its height 1 REF
Read the chronicle
EVERY ERA, EVENT AND REFERENCE ON ONE PAGE
↓
Quick facts · atlas reference
- Capital
- Washington D.C.
- Population
- 327 m
- Area
- 9,372,610 km²
- Region
- North America
- Languages
- English
- Currency
- United States dollar ($)
- Demonym
- American
- UN member
- Yes
Dossier · press a specimen — it turns over
Specimen bench
PRESS A SPECIMEN — IT TURNS OVER
Economy
GDP
$30.77 T’25 WB-WDI
GDP per capita
$90,027’25 WB-WDI
GDP growth
2.2%’25 WB-WDI
Inflation
2.9%’24 WB-WDI
Trade openness
25.0%’24 WB-WDI
Society
Population
342 m’25 WB-WDI
Life expectancy
78.9 yrs’24 WB-WDI
Urban population
80.2%’25 WB-WDI
Fertility rate
1.6’24 WB-WDI
Governance
Voice & accountability
72.4’24 WB-WGI
Political stability
64.3’24 WB-WGI
Government effectiveness
77.8’24 WB-WGI
Regulatory quality
76.2’24 WB-WGI
Rule of law
73.5’24 WB-WGI
Control of corruption
69.9’24 WB-WGI
Health
Health spending
16.7%’23 WB-WHO
Physicians
3.68’22 WB-WHO
Under-5 mortality
6.5’24 WB-UNICEF-WHO
Measles immunisation
92.0%’24 WB-UNICEF-WHO
Safe drinking water
97.6%’24 WB-WHO
Education
Education spending
5.4%’21 WB-UNESCO
Primary enrolment
97.0%’22 WB-UNESCO
Secondary enrolment
97.5%’22 WB-UNESCO
Tertiary enrolment
79.4%’22 WB-UNESCO
Technology
R&D spending
3.4%’23 WB-UNESCO
Researchers (per million)
4,937’22 WB-UNESCO
Internet users
94.7%’24 WB-ITU
Mobile subscriptions
113’24 WB-ITU
High-tech exports
24.3%’24 WB-WDI
Geography
Land area
9,147,420 km²’23 WB-WDI
Forest area
33.9%’23 WB-WDI
Agricultural land
46.1%’23 WB-WDI
CO₂ per capita (t)
13.6’24 WB-WDI
Renewable energy
10.9%’21 WB-WDI
Resources
Resource rents
1.3%’21 WB-WDI
Oil rents
0.6%’21 WB-WDI
Mineral rents
0.1%’21 WB-WDI
Forest rents
0.0%’21 WB-WDI
Electricity access
100.0%’24 WB-WDI
Copper (mined)
1.0 Mt’25 USGS-MCS
Iron ore
38 Mt’25 USGS-MCS
Gold (mined)
160 t’25 USGS-MCS
Cobalt (mined)
300 t’25 USGS-MCS
Nickel (mined)
10.0 kt’25 USGS-MCS
Rare earths
51.0 kt’25 USGS-MCS
Zinc (mined)
670 kt’25 USGS-MCS
Phosphate rock
20 Mt’25 USGS-MCS
Military
Military burden
3.4%’24 WB-SIPRI
Defense spending
$997 B’24 WB-SIPRI
Armed forces
1.4 m’20 WB-SIPRI
A hatched gap has no underside — there is nothing to turn over. Absence is stated, never zeroed.
The record · what changed here
- GDP — 2025 observation published ($30.77 T), superseding 2024 ($28.75 T) → THE SPECIMENLEDGER № 0001 · 2026-08-14
- GDP per capita — 2025 observation published ($90,027), superseding 2024 ($84,534) → THE SPECIMENLEDGER № 0001 · 2026-08-14
- GDP growth — 2025 observation published (2.2%), superseding 2024 (2.8%) → THE SPECIMENLEDGER № 0001 · 2026-08-14
- Trade openness — 2024 value revised by the publisher: 25.4% → 25.0% — -0.36 points → THE SPECIMENLEDGER № 0001 · 2026-08-14
- CO₂ per capita (t) — 2024 value revised by the publisher: 13.6 → 13.6 → THE SPECIMENLEDGER № 0001 · 2026-08-14
- Electricity access — 2024 observation published (100.0%), superseding 2023 (100.0%) → THE SPECIMENLEDGER № 0001 · 2026-08-14
- Population — 2025 observation published (342 m), superseding 2024 (340 m) → THE SPECIMENLEDGER № 0001 · 2026-08-14
- Urban population — 2025 observation published (80.2%), superseding 2024 (80.1%) → THE SPECIMENLEDGER № 0001 · 2026-08-14