Explanation:
The king who has been described as the ‘lord of the five Indies’ is Harshavardhana.

Harshavardhana was a ruler of the Vardhana dynasty who reigned from 606 to 647 CE. He is known for his vast empire and his patronage of art, literature, and culture.

Harsha's Empire:
- Harsha's empire extended over a large part of northern India, including present-day Uttar Pradesh, Bihar, Punjab, and Haryana.
- The term 'Indies' refers to different regions in the Indian subcontinent. Harsha's empire was known for its cultural and religious diversity, with influences from various parts of India.
- The five Indies mentioned in the description could refer to the five divisions of Harsha's empire or the five major regions he ruled over.

Harsha's Achievements:
- Harsha was a patron of Buddhism and was known for his efforts to promote the religion. He organized Buddhist assemblies and built monasteries and stupas.
- He was also known for his support of scholars and artists. He was a poet and playwright himself and wrote three plays, including the famous 'Nagananda'.
- Harsha's court was a center of learning and attracted scholars from different parts of the world, including China.
- He also maintained diplomatic relations with neighboring kingdoms and had alliances with rulers from Central Asia.

Conclusion:
Harshavardhana, the ruler of the Vardhana dynasty, has been described as the 'lord of the five Indies' due to the vast extent of his empire and his patronage of art, literature, and culture. He ruled over a large part of northern India and his empire was known for its cultural and religious diversity. Harsha's support of Buddhism and his efforts to promote scholarship and the arts made his court a center of learning and attracted scholars from different parts of the world.