the doge's problems did not end in europe. in 1509, the battle of diu took place, in india, where the portuguese fleet defeated an ottoman and mameluk fleet, which had been transferred from the mediterranean sea to the red sea with venetian help. the defeat marked the end of the profitable spice trade, which was bought by venetians from the mameluks in egypt and in turn monopolised its sale in europe, reaping great revenues from it.