Final answer:
The first urban renewal plan after WWII targeted the Western Addition neighborhood in San Francisco, known for its predominantly black population of dock workers.
Step-by-step explanation:
The first urban renewal plan after WWII targeted the Western Addition neighborhood in San Francisco, which housed dock workers who were predominantly black. The National Housing Act supported cities with funds for "slum clearance" with the hope of replacing deteriorated areas with new housing and reducing crime. However, urban renewal often led to displacement of residents and created new issues, such as overcrowding in public housing and destruction of community fabric. This consequence was not isolated to San Francisco; it was a pattern observed in many other cities like Los Angeles, where the Boyle Heights neighborhood underwent similar challenges.