The dynasty reached its zenith point between AD 1330 and 1335 when Muhammad Bin Tughlaq led military campaign. Ghiyasuddin Tughlaq was the founder of the dynasty. He strengthened the defence of the North-Western frontier in order to check the Mongol invasions. Jauna Khan succeeded his father in AD 1325 under the title of Muhammad- bin-Tughlaq. He was the most learned scholars of his time. He knew both Arabic and Persian and had comprehensive knowledge of philosophy, astronomy, logic, mathematics and physical science. Ibn Batutah was a traveller from Morocco. He came to India in 1333 and was appointed as the chief Qazi of Delhi by Muhammad-bin-Tughlaq. Firuz Shah Tughlaq (AD 1351-1388) ascended to the throne at the age of forty six. He was not a distinguished military leader. He led two unsuccessful campaigns into Bengal against Haji Iliyas (Shams-ud-din Iliyas Shah) and Sikandar Shah. Tartar Khan commanded the army.

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