Prince Harry, second son of Britain's King Charles III, made history on Tuesday when he appeared in London's High Court to testify against a tabloid publisher he accuses of phone hacking and other unlawful snooping. This is the first time a senior member of Britain's royal family has appeared in court to give testimony since the 19th century, and Harry's statement accuses the publisher of using unlawful techniques on an “industrial scale” to get scoops. Harry is suing the tabloid publisher for unlawful information gathering, and his appearance in court is a historic moment for the British monarchy.