In the year 2050, the world has become one giant super nation, which is now well on its way to becoming a galactic power. The earth is now a Type 1 civilization
The official languages of the supernation will be English, Cantonese, Japanese, Esperanto, and Catalan.
Any place on the planet can be reached within 2 hours by Maglev train or by spaceplane. All transportation is automated.
Half comes from fusion reactors and half comes from renewable resources like ethanol.
All totalitarian states are now part of a world democratic government.
Well money cannot buy happiness at least no one is depressed because of future medicine.