How does paragraph 2 most contribute to a central idea in the passage?
1. It explains the geographical significance of the Northwest Angle.
2. It describes the historical context of boundaries between the United States and Canada.
3. It highlights the unique challenges of navigating in the Northwest Angle.
4. It outlines the implications of tourism for the local economy.
The correct answer is: 2. It describes the historical context of boundaries between the United States and Canada.
Explanation: Paragraph 2 contributes to the central idea of the passage by providing important background information on the historical context of the boundaries that distinguish the United States and Canada, which helps the reader understand the significance of the area being discussed. This context is crucial for comprehending the overall theme of geographical and political relationships in the passage.