Which of the following countries was formed in 1971?

Correct option is C

Bangladesh achieved independence from Pakistan in 1971. In March 1971, the Pakistani military launched a brutal crackdown on East Pakistan, known as Operation Searchlight. This resulted in widespread violence, killings, and a mass exodus of refugees to neighboring India. On March 26, 1971, Sheikh Mujibur Rahman declared independence for East Pakistan, which became Bangladesh.
· Sri Lanka: Gained independence from Britain in 1948.
· Nepal: A federal democratic republic since 1768.
· Bhutan: Unified Bhutan as a nation-state in the early 1900s.