Many of Europe's strongest economies (e.g., France, Germany, the UK) have been open to immigration of men and women from poorer countries. The French and English, for example, offered special conditions to immigrants from their former colonies. During the explosive growth of immigration from war-torn, economically ruined countries in Africa and the Middle East, hundreds of thousands of desperate immigrants poured into Europe in search of jobs, safety and stability. How can immigration serve the interests of European host countries? How can they harm their interests?