What contributed to the downfall of the Qin Dynasty?

Qin Shi Huang was paranoid about his death, and because of this he was able to survive numerous assassination attempts. Upon the First Emperor's death, China plunged into civil war, exacerbated by floods and droughts. In 207 BCE, Qin Shi Huang's son was killed, and the dynasty collapsed entirely.

Explanation:

Qin Shi Huang was paranoid about his death, and because of this he was able to survive numerous assassination attempts. Upon the First Emperor's death, China plunged into civil war, exacerbated by floods and droughts. In 207 BCE, Qin Shi Huang's son was killed, and the dynasty collapsed entirely.

Explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.

1775 is your answer hope this