From what I remember they where a group of escape slaves that escape to Brazil in the state of Alagoas.
Uncle Sam turning his back to Europe in the 1930s conveyed that Americans were not going to be allies with anyone unless they shared the views of the American people.
Answer: Spiritual life
Serfs were laborers or peasant of the middle ages. They provide manual labor on the lands of their landlords. They paid taxes and were responsible for everything that involves the lords' property.
Clergy in the Middle Ages was very influential in the society. In the Roman Catholic Church, they refer to ordained priests or bishops. They were exempted from paying taxes, unlike the serfs. They give services to their parishioners. They provide spiritual satisfaction and care to serfs.
President Roosevelt showed that by negotiating the Treaty of Portsmouth without military force.
Hope this helps :)
Upton Sinclair, American novelist and political writer so he is a political journalist