How did the haitian revolution impact the louisiana purchase

A slave rebellion in Haiti helped the United States double in size at the beginning of the 19th century.  The uprising in what was a French colony at the time had an unexpected repercussion when the leaders of France decided to abandon plans for an empire in the Americas.  With France's profound change of plans, the French decided to sell an enormous parcel of land, the Louisiana Purchase, to the United States in 1803.

a

explanation:

just took the test

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.