HOW does the section "Stamp Act is passed" relate to the section "Boycotting Britain's goods"?

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

if you could provide an excerpt for me to read i could