Discuss the shift from timber framing to light framing in American residential construction that took place in the first

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Discuss the shift from timber framing to light framing in
American residential construction that took place in the first half
of the 19th century.
How improvements in sawmilling and woodworking technology made
light framing possible.
How improved transportation contributed to the practicality and
economic feasibility of using light framing to build houses.
How improved transportation, sawmilling and woodworking, and light
framing contributed to structural changes in the wood products
industry that exist to this day.
How light framing changed the architectural design of houses and
made the various Victorian-era styles possible.