Original sentence: The trustees of the college were incorporated by the state in 1920, by which time its liberal arts identity had been "firmly established," but it took 11 years after the move to Massachusetts for ENC to gain degree-granting power from the commonwealth
Edited sentence: The trustees of the college were incorporated by the state in 1920, by which time its liberal arts identity had been "firmly established," but it took another decade to gain degree-granting power from the commonwealth