People & History
The Wolfram Language has built-in access to an extensive collection of continually updated data on people and many kinds of history. Free-form linguistics provide a convenient mechanism for accessing all available data; more common categories also have specific associated Wolfram Language functions.
(
) — request data using free-form linguistics
EntityValue — general access to values of properties for all types of entities
Entity ▪ EntityClass ▪ EntityList ▪ RandomEntity ▪ EntityFunction ▪ ...
WikipediaData — Wikipedia material about entities and other topics
WebSearch ▪ WebImageSearch ▪ WikidataData ▪ ExternalIdentifier
Notable People
Person — hundreds of thousands of current and historical figures
Current & Historical Naming Data
Historical Word Use
WordFrequencyData — historical usage data for words and 
-grams
Historical Dates & Calendars »
DateObject — represent and convert Gregorian, Julian, Jewish, etc. dates
Socioeconomic History »
Country — historical demographics, economics, etc. for all countries
City — historical demographics, founding dates, etc.
InflationAdjust — historical inflation adjustment
Political & Military History
HistoricalCountry — nations, empires and other civilizations across history
MilitaryConflict — wars, battles and other historical conflicts
HistoricalPeriod HistoricalEvent HistoricalSite
Cultural & Organizational History »
Building University Museum Cemetery
Corporate & Financial History
FinancialData — extensive historical data on stocks and other financial instruments
Company — public and private companies with detailed historical fundamentals data
"TickerSymbol" ▪ "FinancialIndex" ▪ CurrencyDenomination
CurrencyConvert — historical currency conversion rates
Science & Technology History
FamousMathProblem FamousPhysicsProblem MannedSpaceMission Element Planet ...
Historical Weather, Astronomy, etc. »
WeatherData — complete worldwide historical weather records
Sunrise ▪ Sunset ▪ SunPosition ▪ MoonPhase ▪ SolarEclipse ▪ ...