Before revision: Retrieved December 18, 2018 a historical legal practice in the United States and Canada dating back to the 1930s where red lines were drawn on maps to indicate poor and primarily black neighborhoods that were deemed unsuitable for loans or further development ; this created great economic disparities between neighborhoods.
After revision: Retrieved December 18, 2018 a historical legal practice in the United States and Canada dating back to the 1930s where red lines were drawn on maps to indicate poor and primarily black neighborhoods that were deemed unsuitable for loans or further development , which created great economic disparities between neighborhoods.