The correct answer to this open question is the following.
The opinion that the author expresses about a poor “countryman’s” place in Europe versus his place in America is that in Europe, the government and society do no take into consideration the poor people. The result of this attitude is that poor European people find it hard to call these countries their own, because of that indifference. In comparison, the author says that in the American colonies they have proper legislation and social systems that allow the creation of jobs for all Americans, so citizens feel protected and cherished by the government.
We are talking about the fictional publication called "Letters from an American Farmer," written by J. Hector St. John de Crevecoeur.
What she means is that she had made 19 trips to Maryland, helped 300 people to freedom, yet she was never captured and didn’t fail to deliver her "passengers" to safety. As Tubman herself said, "On my Underground Railroad I [never] run my train off [the] track [and] I never [lost] a passenger." During these journeys she helped rescue people that were from her own family and people who weren’t from her own family. You can check her story in the America Library.
An infinitive usually consists of the words "to" plus a verb in its simplest form. Which makes "to finish" seem like the most logical choice.
I hope this is correct and helps you :) good luck!