Final answer:
The expanded version of the original Levitt design refers to the Levittown communities. These were mass-produced, nearly identical homes built using William Levitt's efficient assembly-line methods which quickly created affordable suburbs, although they were marred by racial segregation policies.
Step-by-step explanation:
The expanded version of the original Levitt design was not explicitly named but was synonymous with his Levittown communities. William Levitt, known for his revolutionary approach to building affordable suburbs, utilized mass-production techniques to create entire neighborhoods of homogeneous single-family homes rapidly and efficiently. Each house was almost identical, fostering a uniform look throughout the community and contributing to the nationwide development of suburbs.
Levitt's model allowed for quick and cost-effective construction, facilitated by teams specializing in different aspects of the build process, such as nailing drywall or installing plumbing. The homes were standardized, and the residents agreed to minor modifications and maintenance plans. Although these houses provided a new opportunity for many families, Levittown and similar developments also included racially restrictive covenants, limiting ownership to white families and reflecting the segregationist policies of the time.
The assistance provided by the GI Bill mortgage incentives played a significant role in allowing veterans, and later others, to afford these homes. This approach to suburban planning marked a shift in American residential development and left a lasting impact on the country's social and physical landscape.