What did Genghis Khan do to help the
environment

Genghis Khan, who established the world's largest contiguous empire between the 13th and 14th centuries, has been branded the 'greenest invader' in history as his murderous invasion actually helped scrub about 700million tonnes of carbon from the atmosphere.

Explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

i think option 3. would be ur best bet and u need to write it urself

have a good day