Dom Pedro I, the founder and first ruler of the empire of Brazil, declared Brazil’s independence from Portugal.
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Edith Eleanor McLean became the first baby ever to use an incubator.
A solar eclipse occurred, which is said to have marked the birth of the Greek legend Hercules.
Boston, Massachusetts, was founded by Governor Winthrop.
El Salvador established Bitcoin as legal tender.
The Treaty of The Hague was signed between the German Empire, Great Britain, and The Netherlands.