Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
In game one of a Philadelphia match, IBM's Deep Blue did what no machine had: defeat a reigning champion under tournament conditions.
Launched in 1906, one British warship was so advanced it renamed an entire class and instantly outdated every rival afloat.
Three crowns signed a single document in Paris and redrew the colonial map, handing Britain command of North America.
