Technically, Facebook is the largest country in the world with 2.2 billion monthly active users. Since 2015, the number of users on Facebook has surpassed the population of China, the most populous country on earth and 1.4 billion people are active on the platform every day.
Barack Obama was the first world leader to set up his own Facebook page, in March 2007, when he was still Senator of Illinois. Over the past decade, Facebook has become the channel of choice for engaging potential voters during election campaigns. While many politicians discover social media channels during election campaigns, social media engagement has become part of normal government communications.
Government use of Facebook varies from country to country. While some pages merely broadcast the daily activity of their leaders, others engage with their citizens, replying to the most salient comments and even allowing a free-flow of visitor posts on their respective pages.
With their publications on Facebook, world leaders can now reach an audience of millions of Facebook users worldwide, regardless of the number of likes on their respective pages.
Source : Twiplomacy