Which of the following accurately describes the way china interacted with its neighbors during the tang and song dynasties?

Bith dynasties have something in common:   they both had cultural and social improvements but in the later periods they became more militaristic and spent more and more resources trying to keep the northern "barbarians" out.  i hope this is answers your question 

A.china refusal to trade with other countries led to widespread hostility and warfare.
b.chinas traditional system of government was replaced by more efficient foreign models
c.chinas powerful military allowed it to conquer and govern nearly all its neighbors
d.chinas culture influenced politics and religion countries throughout asia
the answer is: d.culture influenced politics ad religion in countries throughout asia. : )

Ithink the answer is c