- Giuseppe Verdi's opera "Hernani," has it's premiere in Venice.
- Texas becomes a U.S. territory.
- Samuel Morse sends 1st telegraphic message - "What hath God wrought".
- Samuel Morse completes 1st telegraph line to enable telegraph messaging.
- YMCA (Young Men's Christian Association) forms in London.
- Goodyear patents the vulcanization of rubber.
- Spain gives the Dominican Republic independence.