The correct answer is A) building shelters.
The pioneers’ first priority was building shelters.
Life was difficult for pioneers who decided to leave their former lands and travel to the west in the time if US history called "the westward expansion." The Oregon Trail was also a difficult road to cross. Many people could complete it. Hunger was a major issue.
Pioneers had to build their shelters to endure climate conditions, clear the land for farming. However, the opportunity to have their own portion of land motivated many farjmers, former slaves, and immigrants.
It was the the Viking.
Actually, the first person known to have settled in Greenland was Erik the Red, from Norway, who first sailed to Iceland and then to Greenland.
An argument is a debate or debacle it has 2 sides and an explanation is like a lecture your explaining something
to help millions of former black slaves and poor whites in the South in the aftermath of the Civil War.
C. The United States gained territory in the Pacific Ocean.
