Everything was happening at the same time
In 221 BC the First Emperor unified China. Three years later, Hannibal was crossing the Alps. Eras puts events like these on one map and one timeline, and lets you read each one.
Free to start. No account needed.
TODAY IN HISTORY
The House of Wisdom as a great research university may be a nineteenth-century invention. Some historians argue that image was constructed by Orientalist scholars through translation errors and retrospective projection, then repeated until it hardened into fact.
House of Wisdom Established · 830 AD
Open any event. See what else
was happening in those years.
History is usually taught one civilisation at a time: Rome, then China, then the Americas. They ran in parallel. Eras puts more than 2,000 events on one world map and one timeline, so you can see what else was going on in the same years.
The king of Qin defeats the last of his rivals and proclaims himself Qin Shi Huang, the First Emperor, standardising writing, weights and law.
Pick a year. Open an event.
Follow it somewhere else.
Drag the timeline
Scrub from 3000 BC to today, or type a year to jump straight to it. Markers show the events in a window around that year, which you can widen or narrow.
Open a marker
Every event opens in a reader with an overview and a link to Wikipedia. The Chapter events read a page at a time, with the source credited.
See what else was happening
Each event lists other events from the same years and shows the gap, such as 3 yrs later. Open one to follow it.
Read history in order,
one Chapter at a time.
A Chapter is a guided read through a run of events, oldest first, with a line connecting each step to the one before. Three Chapters are free, and none needs an account.
A map to explore,
a source to check
One map of the world
More than 2,000 events sit on one world map as markers coloured by category. Filter by category, or search by title or place.
A reader that credits its source
Chapter events are short pages you turn at your own pace, with Wikipedia credited as the source. Every other event gets an overview and a link to its article.
Places named for their time
A place carries the name it had in the year you are looking at. Constantinople until 1930, then Istanbul. Persia until 1935, then Iran.
Approximate borders
Dashed lines show the political map of the nearest snapshot we hold. They are approximate, and the map says which year the snapshot is for.
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