Final answer:
Developing dry farming allowed farming to expand into West Texas.
Step-by-step explanation:
The action that allowed farming to expand into West Texas was developing dry farming. Dry farming is a method of farming in arid regions that relies on conserving moisture in the soil by minimizing water use and managing crops to reduce evaporation.
By utilizing dry farming techniques, farmers in West Texas were able to successfully cultivate crops in areas with limited water resources. This enabled the expansion of farming in the region, even in areas where traditional irrigation methods were not feasible.
Developing dry farming was essential for agricultural growth in West Texas and played a crucial role in expanding farming practices in the region.