In India, we have segregation based on cast. In cities, the caste based segregation is not very visible though local politicians usually have much better idea. The government used to do income based segregation or its employees: low income group or LIG homes, HIG homes, etc.
Is racial segregation was by design (100% non Whiltes) or just happed due to economic factors (majority of non whites happens to be in this category)?
Racial segregation was literally in law for a long time. When it became illegal, none of the underlying things that had become inherent disappeared overnight.
As an example, banks refused to lend in minority neighborhoods, so unlike for white Americans who used loans to bid up houses owned by white Americans and got wealth that way, Black Americans actually experienced negative housing wealth growth. Those areas are still poor, but now banks don’t lend in them because they’re not profitable, even though the reason they are not profitable is that they were never lent to in the first place.
When Black people managed to build parallel financial systems and economies to provide them wealth, usually they got their properties burned down or firebombed for their trouble. https://en.wikipedia.org/wiki/Tulsa_race_massacre
Is racial segregation was by design (100% non Whiltes) or just happed due to economic factors (majority of non whites happens to be in this category)?