Help me history finals

In the course of illness senerational campaign against stephen douglas in1858 abraham declared that

10 points per question and brainlist 1. name four of the ruling dynasties of china. describe at least three contributions to society from each dynasty. 2. why did the qin ruler zheng burn chinese literature and philosophy books? how did the han dynasty establish a strong and effective government? why did people rebel against the sui rule? 3. what new technologies were invented during the tang dynasty and fully developed in the song dynasty that would eventually have a great impact on the world? explain why this technology had such an impact. 4. who were the invaders that seized control and took over the song dynasty? 5. how was china's history affected by its policies of isolation from the outside world during the ming dynasty?

What eventually brought an end to the brook farm experiment? a.) george ripley ran out of money to fund it.b.) many former inhabitants spoke badly about it in the press.c.) a fire destroyed the central building of brook farm.d.) the experiment never recovered after a mass exodus of inhabitants in 1848.