Step 1 : Introduction to the question "What U.S. monopoly was broken into seven regional companies in the 1980s?"
...In 1984, AT&T was dismantled as part of a landmark antitrust settlement with the U.S. Department of Justice. The breakup ended AT&T’s decades-long control over the nation’s telephone service and created seven regional operating companies—often called the “Baby Bells.” These new firms handled local phone service, while AT&T retained long-distance operations and equipment manufacturing. The move reshaped the U.S. telecommunications industry, fostering competition and paving the way for modern phone and internet services.
