Slavery in Cape Colony, Britain's colony in South Africa, was abolished by the 1833 Slavery Abolition Act.
The Dublin and Kingstown Railway officially opened.
The US government passed the Indian Trade and Intercourse Act.
Cyrus McCormick patented the reaping machine.
Isaac Fischer Jr. patented sandpaper in Springfield, Vermont, US.
Leonard Norcross was granted the first US patent for an underwater diving suit.
The Portage Railroad Line in Pennsylvania built the first railroad tunnel in the US.
