No, it is not true that the development of armies, navies, and weapons is called imperialism. This would be called "nationalism". Imperialism refers to when countries take over and dominate other countries.
They lost 74% of our treaty territory
In America, we have very many different denominations. For example, we have the Catholics and the protestant but they were termed as the ones who occupy a large number in America.
Some of the Protestant denomination who emphasized on national sin were Presbyterian and Congregationalist.
That protestant denomination preached emphasizing on personal public confession were Baptist and Methodists.
The <em>Union</em> was confirmed by the most industrialized states in the country. This meant that the production of weapons and tools related to war logistics was controlled by them. Besides having more weapons and supplies, the <em>Union</em> also had more soldiers, as the population was considerably bigger in the north.
Railroads are a sign of development. In terms of war, they helped mobilize troops and resources along the country with relative ease in comparison to their <em>Confederate</em> counterparts. This represented a great advantage for the <em>Union</em>.
Besides having the previously mentioned advantages. The <em>Union</em> also had the naval power on their side and executed the blockade in an attempt to cut the resources from The <em>Confederacy</em>. As a response, the southern states replaced the growth of Cotton with other crops in order to have food supplies.