Bahadur Shah, the ruler of medieval Gujarat, is known for surrendering the strategic port of Diu to the Portuguese. Diu is an island located off the coast of Gujarat in western India and held significant importance due to its strategic position in maritime trade routes.

During the 16th century, Diu was a prominent trading port and was coveted by various powers seeking control over maritime trade in the region. Bahadur Shah, also known as Sultan Muzaffar Shah III, was the Sultan of Gujarat from 1526 to 1535.

The Portuguese, led by their governor-general Nuno da Cunha, had established a presence in the Indian Ocean and were actively seeking to expand their influence along the western coast of India. They had already gained control over other significant ports such as Goa and Daman.

Bahadur Shah's rule was marked by conflicts and challenges from neighboring kingdoms as well as internal rebellions. In 1531, when the Portuguese attacked Diu, Bahadur Shah initially put up resistance. However, faced with the superior naval power and advanced weaponry of the Portuguese, he eventually decided to surrender.

The exact circumstances surrounding the surrender of Diu to the Portuguese are not entirely clear. Some historical accounts suggest that Bahadur Shah was compelled to surrender due to the overwhelming military force of the Portuguese and the threat they posed to his kingdom. Others suggest that he may have struck a compromise to protect his own interests or to secure support against his rivals.

After the surrender, the Portuguese established their control over Diu and fortified the island, making it a major stronghold in the region. Diu remained under Portuguese control for over four centuries, until it was finally annexed by India in 1961.

The surrender of Diu to the Portuguese by Bahadur Shah had significant implications for the region. It allowed the Portuguese to strengthen their presence along the western coast of India, expanding their trade networks and exerting influence over the maritime routes. The Portuguese control over Diu also had an impact on the political dynamics of Gujarat and neighboring regions.

Overall, Bahadur Shah's decision to surrender Diu to the Portuguese marked a turning point in the history of the region, leading to the establishment of Portuguese dominance and shaping the subsequent colonial and trade activities in the area.