Answer:
I think the answer is (d) improved infrastructure
The south was very underdeveloped. They were simply a bunch of plantations in an agrarian society. The south lived off of slaves to do work for their slave owners. This was a major push factor for the south, as the slaves (blacks) would escape to the north to live as free people. One thing that kept the south surviving was the cotton gin, which made cotton very profitable. The north was going through the industrial revolution, with lots of jobs and a growing economy. This was a major pull factor for not just the south, but to the world in general. This was an example of economic opportunity. Another thing the north had was deforestation to make way for new cities and urbanization. The north was industrialist, while the south was agrarian.
The Spanish American war took place in the year of 1898. One of the leading causes of the war was the blowing up of USS <span>The Maine. In addition, the term yellow journalism used to refer to newspaper stories that may not be true but gain public appeal were growing, and it was causing some exaggeration of stories and Anti-Spanish propaganda. Leading figures of these newspapers are Joseph Pulitzer and William Randolph Hearst. As a result of the war, the US annexed Puerto Rico, Guam, Philippines, and Hawaii. </span>
