Government built highways that crossed through all states
They traded and fought to help industry grow.
Communications.
It helped pave the way for American industry to expand into the West.
After World War II, the automobile industry experienced significant growth due to several factors. The expansion of suburban areas increased demand for personal vehicles, as families sought convenience and independence. Additionally, advancements in manufacturing technology and the introduction of new materials facilitated mass production, making cars more affordable. Economic prosperity and rising consumer incomes further fueled demand, allowing more people to purchase automobiles.
Steel and oil
Read your America AHON book please.
cheap and reliable workforce helped southern industry grow also factorys hleped it grow as well
Industry and manufacturing and personal labor!
Read your America AHON book please.
Look up Andrw Carnigie He was involved alot.
Democrats hand lots of land