Answer:
protection, expansion, prosperity and the mystery of unknown lands
Explanation:
It was because a conflict of French People and Spanish
C. The 2001 attacks on the World Trade Center are an example of a terrorist attack.
The answer that you're seeking is, "Trains from different rail lines could use each other’s tracks." The standardization of rails allowed trains to use eachothers tracks and increase speed and efficieny in deliveries. Hope I helped!
