which industry resulted in a growth of military fields commercial airports across Texas

automobile
railroad
aeronautics
steamboat

aeronautics

The industry that resulted in the growth of military fields and commercial airports across Texas is aeronautics.

The industry that resulted in a growth of military fields and commercial airports across Texas is aeronautics.

To find the answer, you could first analyze the options provided and eliminate the industries that are unlikely to be related to the growth of military fields and commercial airports.

- The automobile industry is primarily focused on the production of cars and transportation on roads, so it is less likely to have a direct impact on the growth of military fields and airports.
- The railroad industry involves transportation on rails and may have influenced the growth of transportation infrastructure, but it is not specifically related to military fields and commercial airports.
- The steamboat industry is related to transportation on waterways, such as rivers and lakes, and is not directly associated with military fields and commercial airports.

By process of elimination, aeronautics remains the most suitable option. Aeronautics is the science and practice of designing, building, operating, and navigating aircraft, which includes military aircraft and the development of airports for military and commercial purposes. Therefore, the aeronautics industry is the most likely industry that led to the growth of military fields and commercial airports across Texas.