Which concept refers to Reagan's missile-defense system popularly known as Star Wars?

• A. SDI (Strategic Defense Initiative)
• B. NAFTA
• C. SALT Talks
• D. Environmentalism

Answer: (A)

This question tests knowledge of Reagan's missile-defense program, commonly called Star Wars. The concept that fits is the Strategic Defense Initiative, or SDI. Reagan announced SDI in 1983 as a plan to develop a layered defense against ballistic missiles, including ideas for space-based interceptors and other technologies designed to protect the United States from a nuclear attack. The media nickname “Star Wars” reflected the futuristic, high-tech image of the program. While there were debates about feasibility, cost, and potential effects on the arms race, the term Star Wars is specifically tied to the Strategic Defense Initiative. The other options refer to different topics: NAFTA is about trade with Canada and Mexico; SALT Talks were arms-control talks with the Soviet Union; Environmentalism concerns ecological protection movements. So the correct concept is the Strategic Defense Initiative.