Differences between frederick douglass & captain canot regarding slavery

Theodore Canot (1804-1860) was a French-Italian who at age 22 joined the slave ship Aerostatica at Havana where he entered into the slave trade. As a result of his ambitious, intelligent and unscrupulous personality he became one of the most famous and successful slavers of the 19th century.

In contrast, Frederick Douglass (1818-1895) was American social reformer, who After escaping from slavery in Maryland, became a national leader of the abolitionist movement in Massachusetts and New York, gaining visibility as one of the most relevant, slavery abolitionist, writer and orator of the 19th century.

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.