450 b.c
The inventor of the Huey helicopter is Connor Lucas, who first introduced the idea to Bell Helicopter company; a company of which still is very prosperous today.
the usa was the first to develop the atom bomb thanks to albert Einstein
The Chinese had thought of a concept of the idea of a helicopter
it was inside his room with he and his safety pins
Vertical Envelopment, or the use of helicopters in combat, was first introduced in the Korean war.
450 BC. Hope it answers your question =)
democritus
Daniel Jackling introduced the idea of open-pit mining
The idea of atoms was first introduced by the ancient Greek philosopher Democritus in the 5th century BC. Democritus proposed that all matter is made up of tiny, indivisible particles that he called "atomos," meaning "uncuttable" in Greek.
Its RADIOACTIVITY!! That was the first discovery that rejects the idea that the atom is indestructible
manu
when your mom go done sucking dick
It was Alexander Hamilton who introduced the idea of a vice president. Hamilton is one of America's Founding Fathers, and served as the nation's first Secretary of the Treasury.
Andrew Jackson introduced this idea of nullification to the 1800s.
joe dirt
Nullification
The idea of the atom was first developed by Greek philosophers Leucippus and Democritus in 5th century BC. Their idea was overlooked until Antoine Lavoisier's experiments were done in the 18th century.