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.
<span>The battle of Leyte Gulf not 100% sure tho :/
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Generally speaking, in a cost-benefit analysis done by a government, “cost” is defined as the negative aspect of what will happen if the government decides to go through with whatever they're debating. It's what the government will lose as a result of this action.
He supported the Treaty of Versailles.