Trivia: What does the St. Louis Gateway Arch commemorate?
President Dwight D. Eisenhower
World War II
Correct Answer: Westward expansion
So why is this answer correct? : The Gateway Arch in St. Louis, Missouri is not only the largest monument in the Western Hemisphere, but the largest arch in the world. Constructed between 1963 and 1965, it was originally called the Jefferson National Expansion Memorial, and was constructed to commemorate westward expansion, honoring Thomas Jefferson’s negotiation of the Louisiana Purchase and the exploration of the west by Lewis and Clark.