Which statement about president kennedy is true? a. he visited the divided city of berlin and gave a powerful speech about political freedom. b. he only appointed people to his cabinet who shared his political views and agreed with all his policies. c. he followed president eisenhower's advice to keep a low profile and not be controversial. d. he ordered federal officials to arrest martin luther king, jr., for staging sit-ins at segregated lunch counters.

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?