In 1947, US telephone companies began using what?

More Questions:

What is IRC an acronym for?

Who steers the shell and motivates the rowers in a crew race?

In which city was the composer Ludwig Van Beethoven born?

Who hosted the "Mad Tea Party" in "Alice of Wonderland"?

What is Greenland called by its Inuit native residents?

What’s the largest country entirely within the southern hemisphere?

What is the capital of the state of Utah?

What classic movie starred Vivien Leigh and Scarlett O'Hara?

Which character did Stephen Boyd play in the 1966 Science fiction film "Fantastic Voyage"?

Although directed by Brian de Palma, which Hollywood director wrote Scarface?

What name was Eva Peron known by?

What did Al Capone largely fund his criminal empire on?

In what apartment complex was Rose Mary Woods living in the early 1970s?

What language was the first English-like data processing language?

In what decade did Toronto surpass Montreal as the most populous city in Canada?