Step 1: Understanding the Concept:
This question connects a major national campaign in India with the historical figure who inspired it.
Step 2: Detailed Explanation:
The Swachh Bharat Abhiyan (Clean India Mission) was a nationwide cleanliness campaign launched by the Government of India. It was officially launched on 2nd October 2014. The date was chosen specifically because it is the birth anniversary of Mahatma Gandhi, who was a staunch advocate for cleanliness and sanitation, famously stating that "Sanitation is more important than Independence." Launching the mission on his birthday was a tribute to his ideals.
Step 3: Final Answer:
Swachh Bharat Abhiyan was launched on the occasion of Mahatma Gandhi's birth anniversary.