Solution:A. Madrid Attack – II. 2004: A series of coordinated bombings occurred on 11 March 2004 on commuter trains in Madrid, Spain, killing nearly 200 people.
B. Bali Attack – I. 2002: On 12 October 2002, terrorist bombings in Bali, Indonesia killed over 200 people, mostly foreign tourists.
C. Indian Parliament Attack – III. 2001: On 13 December 2001, terrorists attacked the Indian Parliament in New Delhi, leading to a major India-Pakistan standoff.
D. Army School attack in Peshawar – IV. 2014: On 16 December 2014, the Tehrik-i-Taliban Pakistan carried out a brutal attack on the Army Public School in Peshawar, killing over 140, mostly children.