Western Europe experienced a tremendous growth in population in the nineteenth century. A. Agricultural failures became less damaging after 1850 because of advances in science and technology as well as improvements in the transportation and preservation of foods. B. The development of better food-processing technologies allowed many Western European countries to grow their own food without having to import it from other countries. C. High death rates in the cities began to decline as food supplies became more reliable and as reformers prompted improvements in sanitation and housing. D. Although agricultural failures led to deaths and emigration, population levels were restored within a short time. E. As the population in the countryside began increasing faster than the supply of food and living space, people began moving to the cities in search of jobs and other resources. F. The improvements in crop-growing methods created new jobs on the farms, causing people from the overcrowded cities to move to the countryside to find those jobs.