### Question
How is the "major system" defined?


### Answer
The term **major system** is defined in *50 U.S.C. § 415a* as follows -

> given that term in section 415a–1(e) of this title.

#### Citation:
  - *50 U.S.C. § 415a*
  - Heading: **CHAPTER 15-NATIONAL SECURITY > SUBCHAPTER III-ACCOUNTABILITY FOR INTELLIGENCE ACTIVITIES**

