What import did Britain introduced into China to balance the tea trade? A) Slaves
B) Opium
C) Sugar
D) Tabcco

B opium

Explanation:

Trade drugs for drugs—specifically, the caffeine fix in tea for the poppies that grow abundantly on the Afghanistan-Pakistan border, which at the time was part of the British empire. “They just start dumping opium into China,” explained Rose. But drug dealing proved to be an expensive headache, and so, in 1848, Britain embarked on the biggest botanical heist in history, as well as one of the biggest thefts of intellectual property to date: stealing Chinese tea plants, as well as Chinese tea-processing expertise, in order to create a tea industry in India.

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.