The first jet airplane was designed in Germany in the early 1940's.
I'm not sure exactly what you mean, but Japan was the first Asian nation to develop and use a jet aircraft. It was called the Kikka. It was very similar (almost an exact duplicate) of the German Me-262.
jet metel
Jet stream
The airplane began to develop with the army and with the jet flyers.
the flight of the first jet airplane was in Germany
Messerschmitt AG invented the first fighter jet.
The first operational jet fighter was called the Messerschmitt Me-262.
Frank Whittle invented and built the first Jet Engine.
The Tupolev Tu-144 was the first supersonic passenger jet.
Henri Coandă, a Romanian Engineer, was the first to build a jet plane in 1910.
The first operational jet made, assembled and to take flight was the Messerschmitt Me 262
Kelvin Kamara and Clavin Kamara invented the first jet pack.