Sources
Every Number
Has a Source
USA CENTURY is a tribute, and its facts have to hold up. These are the sources behind the figures on this site. If you spot an error, the figure will be corrected.
Economy & Scale
- U.S. GDP 2024 ($29.2 trillion): U.S. Bureau of Economic Analysis, bea.gov
- Share of world GDP: IMF World Economic Outlook, imf.org
- Manufacturing construction spending: U.S. Census Bureau, Construction Spending, census.gov
Artificial Intelligence
- Private AI investment and notable AI models by country, 2024: Stanford HAI, AI Index Report 2025, hai.stanford.edu
- Stargate project (up to $500 billion, January 21, 2025): openai.com
- NVIDIA reaches $4 trillion market value: Reuters, July 2025
Semiconductors
- CHIPS and Science Act ($52.7 billion): U.S. Department of Commerce / NIST, nist.gov/chips
- TSMC Arizona production and $165 billion investment plan: TSMC newsroom, pr.tsmc.com
- U.S. fab capacity projection 2022–2032: Semiconductor Industry Association and BCG, "Emerging Resilience in the Semiconductor Supply Chain," May 2024, semiconductors.org
Space
- Falcon 9 landing (2015), 2024 launches, Starship Flight 5, Starlink customers: spacex.com
- Orbital launches by country: Jonathan McDowell, planet4589.org
Energy
- U.S. crude oil production and LNG exports: U.S. Energy Information Administration, eia.gov
- Vogtle Units 3 & 4: Georgia Power, georgiapower.com
- Crane Clean Energy Center (Three Mile Island Unit 1 restart): Constellation Energy, constellationenergy.com
Robotics & Biotech
- Unimate, first industrial robot (1961): Smithsonian National Museum of American History, americanhistory.si.edu
- Digit at GXO: agilityrobotics.com · Electric Atlas: bostondynamics.com · Figure AI funding: figure.ai
- Salk polio vaccine: Salk Institute, salk.edu
- Human Genome Project: National Human Genome Research Institute, genome.gov
- Deaths averted by COVID-19 vaccines: Watson O.J. et al., "Global impact of the first year of COVID-19 vaccination," The Lancet Infectious Diseases, 2022, doi.org
- 2023 Nobel Prize in Physiology or Medicine: nobelprize.org
The Innovators
- ChatGPT 800 million+ weekly users: Sam Altman, OpenAI DevDay, October 6, 2025 (reported by TechCrunch)
- AlphaFold and the 2024 Nobel Prize in Chemistry: nobelprize.org
- NVIDIA first to $4 trillion, July 9, 2025: Bloomberg
- SpaceX 134 orbital launches in 2024: NASASpaceflight; Spaceflight Now
- New Glenn reaches orbit on first flight, January 16, 2025: Blue Origin; Associated Press
- NuScale: first SMR design certified by the NRC (2023): energy.gov
- TerraPower Natrium groundbreaking, June 10, 2024: World Nuclear News
- Casgevy, first FDA-approved CRISPR therapy (December 2023): fda.gov
- Company founding years and headquarters: company websites and annual reports. Company names are used for identification only. USA CENTURY is not affiliated with any company.
Why America Leads
- The U.S. Constitution: National Archives, archives.gov
- World University Rankings 2026: Times Higher Education, timeshighereducation.com
- Immigrant founders of $1B startups: National Foundation for American Policy, 2022, nfap.com
- Dollar share of FX trading: Bank for International Settlements, Triennial Central Bank Survey 2022, bis.org · Reserve currency share: IMF COFER, data.imf.org
- U.S. share of 2024 global venture funding (~57%, $178B of ~$314B): Crunchbase News
- R&D spending: NSF National Center for Science and Engineering Statistics, ncses.nsf.gov
- Military expenditure 2024: SIPRI Military Expenditure Database, sipri.org
Quotations
- John F. Kennedy, Address at Rice University, September 12, 1962: jfklibrary.org
- Abraham Lincoln, Gettysburg Address, November 19, 1863: loc.gov
- Walt Whitman, Preface to Leaves of Grass, 1855: whitmanarchive.org