The Deccan Plateau was not a major trade route used by the Mauryan Empire. The Grand Trunk Road, the Silk Road, and the Ganges River were all important trade routes that were used by the Mauryan Empire.

Cotton was the main export of the Mauryan Empire. Silk, spices, and ivory were also exported, but cotton was the most important export.

Gold was the main import of the Mauryan Empire. Silver, horses, and wine were also imported, but gold was the most important import.

The Kingdom of Magadha was not a major trading partner of the Mauryan Empire. The Seleucid Empire, the Ptolemaic Kingdom, and the Kingdom of Kalinga were all major trading partners of the Mauryan Empire.

The Mauryan Empire's prosperity was due to a combination of factors, including its extensive trade and commerce network, its strong military, and its efficient administration.

Kannauj was not a major city in the Mauryan Empire. Pataliputra, Taxila, and Ujjain were all major cities in the Mauryan Empire.

Hinduism, Buddhism, and Jainism were all major religions in the Mauryan Empire.

Samudragupta was not a major emperor of the Mauryan Empire. Chandragupta Maurya, Ashoka, and Bindusara were all major emperors of the Mauryan Empire.

Pataliputra was the capital of the Mauryan Empire.

The Battle of Panipat was not a major battle of the Mauryan Empire. The Battle of Kalinga, the Battle of Hydaspes, and the Battle of Buxar were all major battles of the Mauryan Empire.

The decline of the Mauryan Empire was due to a combination of factors, including invasions from the west, internal revolts, and economic decline.

The invention of the compass was not a major achievement of the Mauryan Empire. The construction of the Grand Trunk Road, the establishment of a uniform currency, and the development of a written language were all major achievements of the Mauryan Empire.

Ashoka was the Mauryan emperor who converted to Buddhism.

Nalanda was not a major cultural center of the Mauryan Empire. Pataliputra, Taxila, and Ujjain were all major cultural centers of the Mauryan Empire.

Ashoka was the Mauryan emperor who expanded the empire to its greatest extent.