How does the Byzantine Empire and Klevan Rus demonstrate both continuity and change from the previous period of Roman rule?

the answer is mass marketing.

in 1989, tiananmen square in beijing was the site of china’s main industries. china’s government headquarters. -pro-democracy demonstrations. (second choice)

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.