(Correct Answer:- A)

Champa was the capital of ancient Anga in the sixth century BC. It was of great commercial importance. It was a river port from which ships world said down the Ganga and coast to south India and Sri Lanka.

Champā is a historical region located in present-day Vietnam. It was an important port city during ancient times and played a significant role in maritime trade and cultural exchange in Southeast Asia. Among the given options, option 'A' is the correct answer because Champā was indeed a great port.

Importance of Champā as a Port City:
Champā was strategically situated on the coast of the South China Sea, making it an ideal location for maritime trade. The region had a natural harbor, which allowed ships to anchor safely and facilitated the movement of goods. This geographical advantage made Champā a bustling port city, attracting traders from neighboring regions and distant lands.

Maritime Trade and Cultural Exchange:
Champā served as a vital hub for maritime trade between various Asian regions, including India, China, and the Malay Archipelago. Merchants from these regions would visit Champā to exchange goods such as spices, silk, porcelain, and precious metals. This trade also facilitated the exchange of ideas, knowledge, and cultural practices among different civilizations.

Influence of Indian Civilization:
Champā had strong cultural and trade connections with India. Indian traders and merchants frequently visited the region, introducing Indian customs, traditions, and religions. As a result, Champā became deeply influenced by Indian civilization, particularly in terms of art, architecture, language, and religion. The region witnessed the spread of Hinduism and Buddhism, and many temples and religious structures were built in the Indian architectural style.

Decline of Champā:
Despite its prominence, Champā faced numerous challenges over time. The rise of other port cities, such as Angkor in Cambodia, and changes in trade routes led to a decline in Champā's importance as a trading center. Additionally, political instability and conflicts with neighboring kingdoms further weakened Champā's position. By the 15th century, Champā had lost its significance as a port city and was eventually absorbed into the Vietnamese kingdom.

In conclusion, Champā was indeed a great port in ancient times. Its strategic location, thriving maritime trade, and cultural exchange made it an important center of commerce and interaction in Southeast Asia. However, various factors, including the rise of other port cities and political instability, eventually led to the decline of Champā's prominence.