What were major contributions made in biology and chemistry

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.

Apurging of emotions, specially pity and fear

Which of the following best describes a similarity between the haitian and french revolution?