Answer:
monitoring and preventing espionage among countries.
Explanation:
:) hope this helps.
he was a career United States Army officer, most noted for his distinguished service during the American Civil War and the Indian Wars. During the 1880s, the Apache nicknamed Crook Nantan Lupan, which means "Chief Wolf." Crook was promoted to first lieutenant in 1856, and to captain in 1860. He was ordered east and in 1861, with the beginning of the American Civil War, was made colonel of the 36th Ohio Volunteer Infantry
New York, Rhode Island, Maryland, Virginia, Massachusetts, Delaware, South Carolina, Pennsylvania, Georgia, Connecticut, New Hampshire, New Jersey, North Carolina