Answer:
Pakistan was the country to test its first weapon in the Chagai hills on May 28th, 1996
Step-by-step explanation:
Chagai-I is the code name of five simultaneous underground nuclear tests conducted by Pakistan at 15:15 hrs PKT on 28 May 1998. The tests were performed at Ras Koh Hills in the Chagai District of Balochistan Province. Chagai-I was Pakistan's first public test of nuclear weapons.