1654
Pascal and Fermat Invent Probability
Responding to a gambler's question about dividing stakes in an interrupted dice game, the French mathematicians Blaise Pascal and Pierre de Fermat exchanged…
Portuguese Retake Recife
After twenty-four years of Dutch rule in northeast Brazil, a local Portuguese and mixed-race uprising, backed by Lisbon, forced the last VOC garrison out…
Treaty of Pereyaslav
Bohdan Khmelnytsky, exhausted by war with Poland, concluded a treaty at Pereyaslav placing the Cossack Hetmanate under the protection of the Russian tsar…
Christina of Sweden Abdicates
The brilliant, stubborn, Latin-reading Queen Christina, daughter of Gustavus Adolphus, shocked Europe by abdicating the Swedish throne, converting…
Want 1654 in context? Print the whole 17th century as a one-sheet timeline chart.
Frequently asked
What happened in the year 1654?
Saeculum lists 4 events from 1654. The most significant is Pascal and Fermat Invent Probability.
What era was 1654 part of?
1654 falls within the Enlightenment (1651-1800). Reason, revolution, and the first global wars.
Which regions saw notable events in 1654?
The events from 1654 span Europe and South America.