So many cultures have their own architecture styles based on values, goals, morals, and customs shared by their society. When these cultures have relocated to America, to keep their culture and values intact, they bought  land and built in the image of their home lands.

This is not true in historically Black neighborhoods.

    South Central, Los Angeles is the most dense population of Black people west of the Mississippi. In an attempt to address a major housing shortage , public housing was introduced for civilians in 1933 during the New Deal. The federal government began this program with only building public housing for Whites only across the country. Take Los Angeles,after civil protest and an increasing housing crisis, Los Angeles was forced to integrate the housing projects.The Federal Housing Authority (FHA) furthered the segregation efforts by refusing to insure mortgages in and near African-American neighborhoods — a practice known as “redlining.” At the same time, the FHA was subsidizing builders who were mass-producing entire subdivisions for whites — with the requirement that none of the homes be sold to African-Americans. So as White people were moved out of the projects, Black people received what was no longer good enough for the middle and lower class white people.