Which events touched on American sympathy for revolutionary movements?

https://www. ourdocuments. gov/doc. php?flash=false&doc=23&page =transcript

I have no found my answer no matter how much I read. This is about the Monroe Doctrine.

It was British and Spanish interventions during a series of Latin American revolution from the Bolivarian independence movements in South America to the Mexican War for independence.

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.

because dead babies can't fart