DEUTSCHLAND!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I would say the answer is the 335 Years War.
Frontier became a part of America's identity. It represented many things to Americans. Adventure, danger, freedom and opportunity represents the frontier. It is because of the end of the frontier, it had a psychological impact to Americans because the frontier became their sort of escape mechanism.
Well, it wasn't really religion which was the primary goal of the western countries but dominance on land. Since it has been a bloodbath in conquering lands, they ought to use religion to peacefully influence these tribes by bring priests.
The answer should be <span>D. Itinerant preachers spread their religions.</span>
I don’t really know but Friction and Hydraulics are a principle but I feel like it’s O:)