<span>Historians ask many kinds of questions that help them try to understand the past</span>
Answer:
The "thin blue line" is a term that typically refers to the concept of the police as the line which keeps society from descending into violent chaos. The "blue" in "thin blue line" refers to the blue color of the uniforms of many police departments.
i dont know it has something to do with our decaying society
<span>Allowing internment camps</span>