Step 1: Understanding the Concept:
Electronic National Agriculture Market (eNAM) is a pan-India electronic trading portal integrating existing APMC mandis.
Step 2: Detailed Explanation:
The eNAM platform was formally launched by Prime Minister Narendra Modi on 14th April 2016 (on the birth anniversary of Dr. B.R. Ambedkar) across 21 mandis in 8 states to create a unified national market for agricultural commodities.
Step 3: Final Answer:
Therefore, eNAM was started during 2016.