Qin Shi Huang was the founder of the Qin dynasty and was the first emperor of a unified China.
Http://www.skwirk.com/p-c_s-57_u-183_t-490_c-1797/sa/7/shaping-mountains-weathering/erosion-and-r check out this source.
<span>D. all of the above. I hope I could help! :D</span>
A 2014 Reuters analysis found that, before 1971, water reached flood levels no more than five days every year (on average) in several U.S. east coast cities. Since 2001, however, that number has risen to 20 days or more (on average).
