The world was even more divided in the past. When I went to China in 1983 the GDP per capita per year was $285. Even adjusted for inflation they were poor. No more really. Trade and the internet have leveled things up.
My comment sounds overly cynical but I fully agree with you, there’s been so much progress in getting people out of poverty world wide. Yes there’s a big gap in wealth but it’s probably the smallest it has ever been on average, and way more people have their basic needs met than ever before.