If you're talking about the idea of Italian unification from a historical perspective (Seeing as your question is found under the History tab), we can say that having a unified Italy would have made it a stronger country that would perhaps be a more important regional and world player in terms of politics and economy, if it were not for its city-states where each of them had their own agendas and interests.
The pros of the industrial revolution were that wealth increased overall, more people entered the middle class and quality of living increased for everyone as a result of technology. The cons include pollution, accidental death and overpopulated cities.
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