How did president kennedy represent a change in american politics?

The correct answer for the question that is being presented above is this one: "He initiated the moon landing project which did stimulate not only the economy but innovation and commercial applications for discoveries and consequently the economy. His election as a Catholic was an historic glass breaker. The Cuban missile crisis showed the U S would not be intimidated."

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.