The earliest city discovered in India is Mohenjo-Daro.

History of Mohenjo-Daro:
Mohenjo-Daro is an ancient city located in the province of Sindh, Pakistan. The city was built around 2600 BCE during the Indus Valley Civilization. Mohenjo-Daro was one of the largest cities of the ancient world and was a significant center of trade and commerce.

Discovery of Mohenjo-Daro:
Mohenjo-Daro was discovered in the 1920s by Sir John Marshall, who was the Director-General of the Archaeological Survey of India. The site was excavated between 1922 and 1931 by a team of archaeologists led by Sir John Marshall.

Features of Mohenjo-Daro:
Mohenjo-Daro was a well-planned city with sophisticated drainage and water supply systems. The city had a grid-like layout with streets and buildings arranged in a systematic pattern. The houses were made of baked bricks and had several rooms and courtyards. Mohenjo-Daro also had public buildings and granaries.

Importance of Mohenjo-Daro:
Mohenjo-Daro is an important archaeological site as it provides insight into the life and culture of the Indus Valley Civilization. The discovery of Mohenjo-Daro has helped historians and archaeologists understand the social, economic, and political systems of the ancient world.

Conclusion:
Mohenjo-Daro is the earliest city discovered in India and is an important archaeological site that provides valuable information about the Indus Valley Civilization. The city was well-planned and had sophisticated systems for water supply and drainage. The discovery of Mohenjo-Daro has helped historians and archaeologists understand the culture and lifestyle of the ancient world.