english: In the 1930s, the United States government created the Federal Housing Administration, which in turn created a series of maps which were using a color-coding system to determine which neighborhoods should and should not receive federal housing loans.
non_english: 1930'larda, Amerika Birleşik Devletleri  hükûmeti hangi semtin federal konut kredisi alabilceğini belirleyen renk-kodlama sistemi kullanan bir dizi harita yaratan  Federal Konut İdaresini oluşturdu.