B. Factory jobs were plentiful and available in the cities
A. Establish sugar plamtations.
The United States finally collapsed into a Civil War because southern states began to secede from the Union upon Lincoln's election to the office of President. Lincoln did not tolerate these secessions, which he deemed illegal.
The Constitution begins with the Preamble, which states the basic mission and goal of the document, and then goes on to describe the different aspects of the government in varies articles. And since the Founding Fathers wanted the Constitution to be able to "adapt" to new times, they allowed for amendments to be made to it.