Eli Whitney had obtained order from American Government in 1798 to produce guns and introduced the concept of standard interchangeable parts to cut down cost & time in production.
Yes, the concept of cashless policy was introduced in NIGERIA.
Costa Rica introduced the concept of ecotourism.
Michael Faraday first introduced the concept of electric fields/
The concept of the Festivus pole was introduced by the writter Dan O'Keefe. He claimed his family used the concept as early as 1966 but it was introduced to the world through the show Seinfeld in 1997.
nixon
Weber
India
Satch Regan
Bangladesh
Concept 2 . end of
it was intoduced by Galileo
Alferd Marshall....