Answer:
Southern farmers could not keep up with demands for cotton.
Explanation:
Southern farmers could not keep up with demands for cotton so they improvised by using tobacco instead.
That statement is true.
Insider threats refer to the threats that came within the Homeland. Usually came from a double agents, incompetence of the security employees, betrayal of an officer, etc. Espionage and security negligence happen when agencies in our country fail to install necessary measure to conduct a proper background check for the people who intended harm to this country from within.