Slovenia - South Korea and Japan 2002 - population: 1,99 million
Northern Ireland - Sweden 1958 - population: 1,4 million
Kuwait - Spain 1982 - population: 1,37 million
Trinidad and Tobago - Germany 2006 - population: 1,3 million
Paraguay - Uruguay 1930 - population: 850.000
Iceland - Russia 2018 - population: 332.000