The Queendom of Barbie Mermaidia is a massive, environmentally stunning nation, notable for its state-planned economy, ban on automobiles, and stringent health and safety legislation. The compassionate, devout population of 3.878 billion Barbie Mermaidians enjoy extensive civil rights and enjoy a level of social equality free from the usual accompanying government corruption.

The large, liberal, socially-minded government juggles the competing demands of Healthcare, Education, and Spirituality. The average income tax rate is 55.1%, and even higher for the wealthy.

The sizeable but sluggish Barbie Mermaidian economy, worth 97.5 trillion dollars a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector, which is quite specialized, is led by the Tourism industry, with major contributions from Book Publishing, Furniture Restoration, and Door-to-door Insurance Sales. Average income is 25,139 dollars, and distributed extremely evenly, with practically no difference between the richest and poorest citizens.

Cricket farmers use magnifying glasses to fit every member of their herd with tiny tracking tags, preschoolers practice disarming active shooters before naptime, the Bibble is a protected species, and Barbie Mermaidia's children are widely acknowledged as the most foul-mouthed in the region. Crime, especially youth-related, is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Barbie Mermaidia's national animal is the Bibble, which frolics freely in the nation's many lush forests.

Barbie Mermaidia is ranked 127,825^th in the world and 2,403^rd in the Rejected Realms for Largest Populations, with 3.88 billion capita.