Letter collections started being collected from mailboxes in Boston, US.
Source
English sea explorer Henry Hudson reached the Hudson Bay, which was named after him.
The King of England, William II, was killed by an arrow while hunting in New Forest Hampshire, England.
Andrew Hallidie introduced the cable car to San Francisco after witnessing a horse and carriage accident.
Researchers in South Korea developed a tattoo that monitors a person's health.
Samuel Briggs and his son patented his nail-making machine.
