On this Day in History

On this Day in History in 1795: France adopts the metre as the basic measure of length.
 
On this Day in History in 1827: English chemist John Walker invents wooden matches.
 
On this Day in History in 1906: Mount Vesuvius erupts and devastates Naples.
 
On this Day in History in 1930: The first steel columns were set for the Empire State Building.