Mix and match.

SWEDEN; SCANDINAVIA

A new wave of foreign arrivals in Sweden began 15 years ago. Experts prefer not to call it immigration because most come as asylum-seekers or as part of family reunions, unlike the many job-seeking Finns and others who appeared in the 1960s. But whatever the label, roughly 1m of Sweden's 9m people were born outside the country; and if you add in those with at least one parent born abroad, nearly a quarter of the population are outsiders. Why is Sweden attracting so many more foreigners than the other Nordic countries? It is the biggest, most urban and most cosmopolitan of the five, plays an active role on the international stage and has a policy, broadly speaking, of welcoming refugees. Mauricio Rojas, a member of parliament for Sweden's Liberal Party and director of Timbro, a think-tank, says immigration is shaking the identity of the Nordics. Sweden is not especially prone to violence against immigrants, though neo-Nazi thugs occasionally attack foreigners. The challenge of integration is threefold: to ease clashes of culture between migrants and the native population; to avert a xenophobic backlash in politics; and, most important, to bring foreigners into the workforce.