The first computer was made in the USA.
Radium and polonum were discovered by Maria Curie.
The first accurate clock was designed in 1657.
The first rocket was launched by Robert Goddard in 1926.
The first computer was made in the USA.
Radium and polonum were discovered by Maria Curie.
The first accurate clock was designed in 1657.
The first rocket was launched by Robert Goddard in 1926.