Wat modern city marks the site of the battle

yes.

explanation:

because it let the japanese know who had the upper hand in the war.

albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers

basically means the stoc market is going down since   dow is one of the most sucessful buiness it would be a tragedy for it to go down and it ensures the ruinty of the stock market