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.
Galileo was the original who introduced of the concept of inertia.
Yes, the concept of cashless policy was introduced in NIGERIA.
Michael Faraday first introduced the concept of electric fields/
Costa Rica introduced the concept of ecotourism.
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
Costa Rica introduced the concept of eco-tourism to the Caribbean region.
Satch Regan
India
Bangladesh
Concept 2 . end of