I would say Washington DC because the White House was burned down
On June 5, 1956, a Montgomery federal court ruled that any law requiring racially segregated seating on buses violated the 14th Amendment to the U.S. Constitution. ... Montgomery's buses were integrated on December 21, 1956, and the boycott ended. It had lasted 381 days.
<span>This above passage describes random sampling. Because the researchers pick six random states, then ten random zip codes (for a total of 60 zip codes), then 50 people from each zip code (for a total of 50*60 people), the process is completely random.
Although, I would probably make an alteration to include 3 states that favor one party, 3 states that favor another party, and 3 swing states for a survey like this (with everything still being random).</span>