Complex sentence: San Felè suffered from substantial emigration in the late 19th century (to North and South America) and from the end of World War II (Germany, Switzerland, northern Italy).
Split into simpler sentences: San Felè suffered from substantial emigration in the late 19th century (to North and South America). There was also intense emigration from San Felè after the end of World War II (to Germany, Switzerland, and northern Italy).