industrial expansion and population growth radically changed the face of the nation's cities.noise,traffic jams,slums,air pollution,and sanitation and health problems became commonplace.mass transit ,in the form of trolleys ,cable cars,and subways,was built ,and skyscrapers began to dominate city skylines.
The best and easy meaning of comprehensive is understand fully or covered widely.
Answer: Context Clues
Explanation: If you have an example sentence of "She's such an ignoramus, an absolute idiot." The word you recognize (i.a idiot) would help you understand that ignoramus generally means the same thing.
