What did the Duke family open in North Carolina in the 1870s? A lumber mill that became a giant in timber a textile factory that produced denim fabric a textile factory that produced knit hosiery a large-scale tobacco company in Durham

The answer is: a large-scale tobacco company in Durham

It's the first tobacco company in united states that produced using advanced technology and nationwide advertising. At the time of its peak, the company control around 40% of tobacco market in united states. This mark the duke family status as one of the richest family in united states.