This is, quite literally, an insane statement.
Emeagwali was born in 1954.
First message sent between Stanford and UCLA was sent in October 1969:
Emeagwali, at this time was serving as a child soldier in the middle of a Civil war in Nigeria.
Unless the smartest people in the world were traveling to West Africa to find kids killing each other to solve the issue of Computer Networks, then it wouldnt be possible.
He won a prize in parallel computing using architecture, in 1989, that was never ever used for Mass connectivity in America because, in the UK, the World Wide Web was developed.
In fact look into the 80's, when the foundation of the computer networks were widespread in north america:
In 1984 not a single HBCU is part of the network.