The USA, land of Systemic Racism & White Supremacy:
Median income & average life expectancy = $69K/A & 78Y;
Ethiopia, occupied by Italy during WWII, but never colonized;
Median income & average life expectancy = $1K/A & 65Y;
Haiti, Black majority rule 1804;
Medium income & average life expectancy = $1K/A & 64Y;
Liberia, Black majority rule 1847;
Median income & average life expectancy = $1K/A & 63Y;
Jamaica, Black majority rule 1962;
Median income & life expectancy = $0.5K/A & 63Y;
Zimbabwe, Black majority rule 1980;
Median income & average life expectancy = $1K/A & 61Y;
South Africa, Black majority rule 1994;
Median income & average life expectancy = $2K/A & 64Y;
Ergo, Systemic Racism & White Supremacy
-> prosperity & longevity.