Final answer:
Fort Monmouth, which served as the headquarters for the U.S. Army Telecommunications-Electronics Command, was located in New Jersey before its closure.
Step-by-step explanation:
The subject of this question is Social Studies as it relates to the location of Fort Monmouth, which is a military facility. Social Studies encompasses the study of history, geography, and government, which are relevant to understanding the headquarters of the U.S. Army Telecommunications-Electronics Command.
The headquarters of the U.S. Army Telecommunications-Electronics Command, commonly referred to as Fort Monmouth, was located in the state of New Jersey. Fort Monmouth was responsible for critical advancements in communications and electronics that have been vital to the U.S. Army's operations. While active, it served as a major technology hub for the Army before it was closed under the Base Realignment and Closure (BRAC) process.