19th century in technology

transition to new manufacturing processes in Europe and the United States, in the 18th-19th centuries

phase of rapid industrialization in the final third of the 19th century and the beginning of the 20th

undersea cable

Period of early 20th century history of rapid technological advancement

period of history starting in the 1760s

ladder-lift mechanism installed in mines

1865-1867 expedition organized by the Smithsonian Institution to Canada, Russian-America (Alaska), and Asia

international exposition in Dublin

American telecommunication circuit