Despite efforts of appeasement by the
http://en.wikipedia.org/wiki/Tokugawa_shogunate to establish an atmosphere of peaceful solidarity, many feudal
http://en.wikipedia.org/wiki/Daimyo remained bitterly resentful of the shogunate's open-door policy to foreign trade. Belligerent opposition to European and American influence erupted into open conflict when the
http://en.wikipedia.org/wiki/Emperor_K%C5%8Dmei,
breaking with centuries of imperial tradition, began to take an active role in matters of state and issued on March 11 and April 11, 1863 his "
http://en.wikipedia.org/wiki/Order_to_expel_barbarians"
I'd like to know if "centuries of" modifies "imperial tradition."
Thank you in advance for your help.