People don't always leave forever, and those that do may still have friends, family and property in their old country. Historically even second or third generat

People don't always leave forever, and those that do may still have friends, family and property in their old country. Historically even second or third generation emigrates have volunteered to fight for the country of their parents or grandparents, not because they know or own anything there just due to a sense of national duty.