Pretty accurate because the North (Union) won the Civil War . Mainly due to the fact that the South (Confederacy) lacked soldiers & supplies to fight anymore battles.
The answer is c. protectionism
Attaching an electronic catalogue card to each document is the simplest means to do searching much easier. Metadata is the data about a certain data. Example of metadata is Dublin core which specify a standard set of needed and approved elements for such catalogue card.
