Detroit could be replaced by St. Louis. According to Wikipedia, St Louis was the 4th largest city in 1910, with 687,029 residents, but its 2010 population was 319,294.
Also, there was the matter of the divorce in 1876 when St. Louis City voted to remove itself from St. Louis County. It became an independent city, equivalent to a county. Many other cities expanded by annexing into what had been their suburbs. As Ander mentions, the footprint of the city is very small. The boundaries were fixed in 1876 and there was no further annexation.
The City of St. Louis has a very small defined area, bordered by the Mississippi River on the east, and surrounded by St. Louis County. As the population grew from the city into surrounding St. Louis County the metro area grew but the city showed a steep loss of population. It's true that the population of the city was 319,000 in 2010, but the metro area was nearly three million. The area has lost population, but not so drastically as the stats would make it appear.
St. Louis reached a population of 856,000 in 1950, a year many older cities constricted by smaller city limits peaked before drastic loss to larger areas outside those small borders. Today, there are huge swaths of St. Louis that are grass with a building or two or three here and there where once there were densely packed, attractive row houses. Cleveland is similar 915,000 down to 385,000. Detroit 1,850,000 to 673,000. Youngstown 170,000 to 64,000.
And Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Neptune, and Pluto. Sadly, no US state was willing to name a town Uranus. There is, however, a Mianus, Connecticut.
It was funny listening to one of my British coworkers talk about how they found his remains next to a toilet because it sounded like he was saying "Richard the Turd"
Not that anybody asked for my opinion, but the Moulin Rouge clue doesn't really need the "Nicole Kidman movie" part of the question. Makes it too easy (and it already kind of is). In my opinion. Not that anybody asked.
It was the only one I got wrong. I guessed Born Free as I knew it had an Elsa.
Pop culture is my achilles heel in these quizzes.
https://en.wikipedia.org/wiki/Copacabana,_New_South_Wales