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
It lasted 300 years I believe! :)
Answer:
The Roman Empire conquered these lands by attacking them with unmatched military strength. Not only did they have so much manpower, their military technology was also unmatched.
Explanation:
Answer: war serves to legitimize violent solutions to social problems
Explanation:
All of the following reasons except __war serves to legitimize violent solution to social problem______ contribute to this increase, according to social psychological analyses