Ipaliwanag kung paano maituturing na sibilisado ang sistema ng pamumuhay sa isang pamayanan o lungsod. 3-5 sentences yung may pinaka-magandang sagot i-brabrainliest ko :]

Why was the united states motivated to establish the open door policy? a. the policy guaranteed american commerce with china. b. the policy supported the chinese nationalist cause. c. the policy led to a gain of american colonies in asia. d. the policy claimed damages from the chinese.