Amir Husayn needed to justify the Mamluk expedition, while Malik Ayaz primarily needed to protect Diu and his own position. Their alliance therefore joined different political risks rather than a single unified strategy. Large Atlantic ships let Portugal carry goods around Arabia and Africa instead of paying taxes through Persia, Egypt, Ottoman territory, and Italy. Even selling at familiar European prices could yield higher profits, which made the route an economic threat to every bypassed state.
Notable Point · 1:08:20-1:14:59
The coalition defended revenues the ocean route bypassed
Competing commanders faced a Portuguese shipping system that could undercut the cumulative taxes of older routes.