Which invention or innovation produce better iron?
a. using coal to smelt iron
b. using steam engines
c. the bessemer process
d. the putting out system

Will give brainliest what changes took place in the soviet union and eastern europe after ww2

How w.e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?

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?