A ) 1970
B ) 1971 ✅
C ) 1972
D ) 1973
Explanation:
East Pakistan was separated from West Pakistan on 16 December 1971, when it became the independent country of Bangladesh.
Key Events:
- ✅ Date of Separation: 16 December 1971
- ✅ New Country Formed: Bangladesh
- ✅ Event Name: End of the Indo-Pakistani War of 1971 and Bangladesh Liberation War
- ✅ Cause: Political, economic, linguistic, and military tensions between East and West Pakistan.