We have to read the text for us to be able to answer the questions.
First, the Union had the large population, people to fight in the war<span> and work in the factories to make </span>war<span> materials. The </span>North<span> also had the industrial base, the factories to make these </span>war<span> materials. ... Finally, the Union had a navy which they used to blockade the southern coast.</span>
NATO I believe I am not absolutely sure but I believe that it is NATO