<span>To reproduce children to continue the family line and for the ethnic group.</span>
It was in the former Yugoslavia where the country was torn apart by ethnic wars between Croats and Serbs as well as Albanians. The situation came to a point where not even
the United Nations peace keepers could stop the violence and so the U.S. sent
its military to end the conflict.
Answer is filling military supply orders
Western European countries were some of the prime sources of immigrants at the time, in particular Ireland due to the lasting consequences of Ireland's Great Famine, aka the potato famine in the mid 1800's.
