Who invented shorthand?

Shorthand is believed to have been invented by Tiro, a slave of Marcus Tullius Cicero, to keep pace with the speeches his master delivered. Cicero (106 BC – 43 BC), a statesman, lawyer, political theorist, and philosopher, is considered one of Rome’s greatest orators. His political speeches are well known, and he delivered these in an elaborate and flowery style, which came to be known as the Ciceronian rhetorical style. Tiro perfected a system of Latin shorthand, which served to preserve the speeches. The Tironian notes consisted of word stem abbreviations (notae) and word ending abbreviations (titulae). The original Tironian notes consisted of about 4,000 signs but the number gradually increased to 13,000. After Cicero’s death, Tiro published many of Cicero’s speeches. He is also credited with writing a biography of Cicero, a book on grammar and a book on philosophical questions.