That he defeated the British during the revolutionary war
1. I wonder why are deadly extreme sports more popular than ever?
2. I'm asking you who is the most determined person you know?
3. I'm curious to find out is it your first time to go mountain climbing?
4. The reason why I won't go hang gliding is because I'm afraid of heights.
5. I'm telling you be careful when you go skateboarding.
6. Do you know if there are more people trying rock climbing than ice climbing?
hope this helps!
The sentence in which the underlined infinitive phrase functions as a subject is the last one - to quickly move large groups of people is the purpose of public transportation.
<em>To quickly move </em>is the infinitive phrase, and it is a subject.