Data credits

Questions are generated from facts that two sources agree on. Thanks to:

• Wikidata — CC0
• mledoze/countries — made available under the Open Database License (ODbL)
• Wikipedia — facts from the list of largest cities of U.S. states
• U.S. Census Bureau — public domain

Spotted a mistake? Well, actually… tell us. A “flag this question” button is coming soon.