1906 De Forest invents radio amplifier, Voice & music radio broadcast in US, Kellogg's sells cornflakes for the first time ...

Follow this timeline to chart significant events portrayed in Ken Burns' film, as well as many contemporaneous events, from pre-Columbian times to the early decades of the twentieth century.

Throughout the 20th century, only two conclaves lasted up to five days − Pope Pius X's election in 1903 and Pope Pius XI's ...