What made Japan a major economic power ?

ok bro

what made japan a economic power was trade in 1853 ish japan opened its borders for trade, during trading japan got new technologies and advanced from it leading to a power country until WW2 when America had to put them in their place

no, to many things have came in to factor

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).