I'm almost 100% sure the answer is Private
Answer:
Improve society, change an aspect of the social structure. Bring about a total change in society. Produce radical change in individuals, based on spriritual or supernatural belief systems. Limited change in some aspect of people's behavior.
Explanation:
I'd say either railroads or wagon trains because airplanes and steamboats are not land travel and wagon trains are a vehicle and railroads are a thing they ride on to guide them
