Indians introduced it.
I assume you mean "When was the first operating system introduced?" Seems to be in the 1950s. See the link below for a very detailed page.
The first mathematician is Arya bhatt.
Ancient Greece, around 500BC.
porn
1946
Carl Schurz
The world's first Electric Trolley System was introduced in Montgomery in 1886.
The encomienda was introduced to the Americas by the Spanish settlers, authorized by the Spanish crown in 1503. The system was first devised when the Spanish conquered the Moors in Spain.
Ostracism appears to first have been used by the Athenian democracy.
Windows 2000
The city-state of Athens in Ancient Greece