The idea of a comprehensive, centralised world empire has fuelled the imagination of authors of dystopian future literature since the beginning of the modern era. For conspiracy theorists, they are still big business. For nationalists, it's a nightmare. Unless, of course, their own nation were to take over world domination.
Such a world empire would not necessarily mean a world dictatorship. Everything could also go well. However, knowing human nature, this is hardly conceivable. The interests are too different and could hardly be reconciled by a centralised world government. The result would be unrest, uprisings and the replacement of world wars with world civil wars. We already have all that.
That is why democratic world federalism seems to me to be the only logical way to get a grip on the future of mankind. I have published a detailed article about this on Substack:
Global empire or federal world union? - by Richard Maxheim (substack.com)
I have also started building a new website:
United Mankind Initiative (google.com)