Explanation:

- Correct Answer: Option 1 - Liberia

- India made history by being the first country to deploy an all-woman contingent to a UN Peacekeeping Mission in 2007.

- This pioneering team was sent to Liberia, a nation recovering from a long civil war.

- The presence of Indian women peacekeepers in Liberia played a significant role in rebuilding trust and inspiring local women.

- Liberia's peace and recovery process greatly benefited from their presence, providing security and support.

- Sudan, Burundi, and Croatia have also seen peacekeeping missions, but they did not mark this milestone with an all-women Indian contingent.