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Prominent examples are the United States, the United Kingdom and France.

Until 2011 there was one flag with just one colour: Libya, which flew a solid green flag, but has adopted a flag with 4 colours after the ousting of former strongman Muammar Gaddafi.

This infographic considers the flags of the 193 United Nations member states.

This article and chart originally appeared on the blog of the data firm Statista, and is republished here with permission