Which of the following identifies the major development that contributed most to the urbanization of Texas?(1 point) Responses
a. The discovery of oil in the early 20th century
b. The construction of railroads in the late 19th century
c. The Mexican-American War in the mid-19th century
d. The establishment of Spanish missions in the 18th century
The correct answer is b. The construction of railroads in the late 19th century.