The best way to get people to accept a global government would be to introduce a common enemy.
Post of the Day.
Its always convenient to have a boogie man when you need one.
“I occasionally think how quickly our differences worldwide would vanish if we were facing an alien threat from outside this world. And yet, I ask you, is not an alien force already among us? What could be more alien to the universal aspirations of our peoples than war and the threat of war?”
https://www.cultureready.org/blog/reagans-1987-un-speech-alien-threat-resonates-now