I believe it is the last option... "Its political system cannot be easily changed.
Answer:
A. airplane - international trade
Explanation:
The above statement correctly match of invention with its impact on expanding business in Texas after the Civil War. This could be seen in the series of airplane manufacturing companies <em>which setup its production plants at the states as well as its shops. also, the manufacturing of airplanes turns the state to become an international trading hub for transporting people and goods from one location to another.</em>
I think the answer is A, not for sure.
Reconciling with the south rather than punishing it