Tell whether these angles are adjecent or vertical then find the value of x

Select all that apply. the tang dynasty interacted with foreigners by: a letting them buy property in china. b accusing them of corruption and the downfall of the dynasty. c trading with them, especially japan and korea. d teaching them to become monks. e attacking them with military forces.

(05.04 mc) how did the roman transportation system keep the empire strong? plz

Which 3 ancient principles can be found in american government