Which best describes the major problems caused by the massive population growth during modernity? A The plague ravaged Europe, killing almost half of the population. B Government, education, and other social systems were unable to keep pace with the rapid influx of people. Landowners could now charge a lot more for rent, which tripled every decade of the 1800s in major cities. D As people moved from the country to cities, agriculture suffered from lack of labor, causing food shortages in many areas