which european countries are the friendliest?
['Gothenburg, Sweden. Many people consider this Swedish city to be among the most open-minded and sociable in the world. ... ', 'Stockholm, Sweden. The Swedish capital of Stockholm also fares well in the slew of friendly-city research. ... ', 'Porto, Portugal. ... ', 'Dublin, Ireland. ... ', 'Berlin, Germany. ... ', 'Krakow, Poland. ... ', 'Oslo, Norway. ... ', 'Copenhagen, Denmark.']