The statement that accurately explains a way that the discovery of oil at Spindletop has influenced Texas’s modern identity is: "It resulted in the state’s economy permanently changing from a focus on agriculture to a focus on industrialization and manufacturing."
The discovery of oil at Spindletop in 1901 marked the beginning of the Texas oil boom, which transformed the state's economy, shifting it from an agricultural focus to one centered on oil and industrialization. This change not only influenced economic growth but also contributed to the urbanization of Texas as people migrated to cities for jobs in the booming oil industry and related sectors.