Title: Napoleon.
Question: By 1811, what was the population of Napoleon's Empire?

Title: Tucson, Arizona.
Question: Which Australian town has a similar climate as Tucson?

Title: New York City.
Question: What is the largest park in New York City?

Title: Dwight D. Eisenhower.
Question:
Why did Eisenhower need surgery on June 9, 1956?