As international travel became cheaper and national economies grew more connected over the past thirty years, millions of people from the Third World emigrated to richer countries. A tenth of the popu
In 1915, a German U-Boat sank the British passenger liner Lusitania. Many Americans, including women and children, were among the 1,200 dead, so the crime caused a storm of protest in America, and hel
Many nations invite foreigners to work within their borders, but few welcome them. Those countries that do receive a torrent of immigrants create pressures that analysts expect to intensify as populat
