Before talk about any unity need to learn how to separate.
People, countries, states, regions can unite only after they separated and than sorted into groups by some common denominator.
This process will never stop.
For example states in the US union were united base by common culture, history etc. and today , in 2024 the same states have more things which divide them than unite them.
Compare general population and government in states California, Oregon, Washington with states Texas, Florida, Tennessee.
Their is more thing which divide these states than unite them.
Similar things going on the international level.
Look at Union Nation. regions like Europe and Africa, Middle East. why they in one union?
Europe manufacture small sport electric car for $ 1.5 millions and wrest watch with sapphire glass for $ 2 millions, when at the same time for the same amount of 1.5 millions will be possible to build steel mill - manufacturing business in the Middle East or Africa, which will employee hundreds of people.
conclusion: instead of one Union Nation office will be better to establish several smaller regional union nations, like Union of Middle Eastern countries; Union of African countries, Union of South American countries.
each union should include countries with common history, present condition, similar human capital, common human value.
in the case of USA, need to adopt new constitution, constitution which will be written by the USA general population and not by founding fathers. new constitution USA will unite people with common value.