A
Poverty and hunger were common in Europe
B
Deadly diseases were widespread in Europe
C
Lack of urban development in Europe
D
1 and 2
Solution:
Europeans fled to America in the 19th century because poverty and hunger were commonplace in Europe. Around 30 million people from Europe emigrated to America in the 19th century. Reasons for migration were plenty. Cities were overcrowded and deadly diseases were uncontrolled. Anyone holding views different from the established religion was not tolerated and was severely persecuted. As a result, large numbers of people escaped to America. Demand for labour was high in America, which fueled more migration. Thus, innumerable Europeans left their home and travelled vast distances for a better future.