I want to know the answer to the following question:
What sector of economy was plagued by terrorism attacks?
All the background I'm provided with is that "In the 1990s an Islamist group, Al-Gama'a al-Islamiyya, engaged in an extended campaign of violence, from the murders and attempted murders of prominent writers and intellectuals, to the repeated targeting of tourists and foreigners.". Is that enough to answer the question?
Answer: no