It was probably something to do with there rival
Answer:
A Charleston Mercury editorial published in 1860
Explanation:
Charleston Mercury editorial published in 186. a year before the beginning of the US Civil War, would be and ideal item for an historian trying to understand the situation in the US at that time. Newspaper articles are considered one of the primary sources that are used to study history. They represent evidence and testimony of a time long passed.
Answer:
The Soviet Union was concerned that he was somehow connected to the, "Cuban Missile Crisis", They wasn't wrong. So the Soviet Union tracked down the aircraft which Major Rudolph Anderson was on and they found out that he was photographing secret locations of the tactical nuclear weapons which was Positioned near America's Guantanamo bay naval base.