Curacao and Sint Maarten said that they were contributing a disproportionately large amount to the government.

BBC: Curacao profile

While Curacao and Sint Maarten became autonomous countries, the less-populated islands of Bonaire, Sint Eustatius and Saba now have city status within the Netherlands.

BBC: Curacao profile

His kingdom spans two continents and is made up of four countries: Aruba, Curacao and Sint Maarten in the Caribbean as well as the Netherlands in Europe.

BBC: Profile: Willem-Alexander, King of the Netherlands