[3] The Portuguese were determined to ensure that Bahrain acknowledged the authority of the king of Hormuz and paid him yearly taxes, with a large portion going to the vizier Rukn ed-Din, who had significant business interests there.

[4] Wanting to strengthen his hold over Bahrain, the king of Hormuz sought the Portuguese's assistance, as their treaty obligated them to defend his lands.

The Portuguese saw this as an opportunity to weaken Muqrin, the king of al-Hasa, particularly his naval power, which posed a threat to their interests in the region.

[7] The Portuguese swiftly began constructing a massive fort complex at Qalat Al Bahrain to assert control over their newly acquired territory.

Prior to António Correia's invasion, "Bahrain" referred to the broader historic region, but afterwards, it came to denote specifically the archipelago that forms the modern state.