China is currently the most populous county in the world, with 17.9% of the global population. Historically, only various Chinese empires and the Mongol and Roman Empires have exceeded 30% of the global population. This question asks if by 2100, there will be a centralised government ruling over 80% of the world's population, and accounting for over 80% of global GDP.
Will one government govern 80% of Earth's population and economy by 2100?
This question resolves positively if a single government rules over 80% of Earth population and 80% of Earth GDP at any point before January 1st 2100. An organisation would be considered an Earth government if it has supreme military authority in its territory, a unified foreign policy and the power to collect taxes and make laws. This would include the 2021 United States and exclude the 2021 European Union or United Nations.