Canadian, Eh?

There were three explorers, hiking through what is now known as Canada.
"You know," said one of the explorers, "we should name this place we're hiking through."
"I know," said the second explorer. "We'll each pick a letter and then make a name out of that."
"Okay," said the third, "I'll go first. C, eh."
"N, eh."
"D, eh." And that's how they named Canada...