There should be one world governing body.
Candidates for the position of world leaders would be required to pass sophisticated tests,
as well as psychological and medical exams.
To help curb the population explosion, every person would be permitted to have .75 of a child,
so a couple could have 1.5 children.
People would also have the right to purchase percentages from others in order to have more children.
There would be one united military.
This will allow trillions of dollars to be available for universal healthcare, better education, and other programs, inevitably improving the quality of life for all citizens
Everyone would be bilingual.
People would speak the language native to where they live, as well as a world language.