Title: Economy of Greece.
Question: What does Greece have the largest of in the world?

Title: Daylight saving time.
Question: What year did an accident occur at a German facility with molten steel because of the change to DST?

Title: Mexico City.
Question: Who termed the slogan "la Ciudad de la Esperanza?"

Title: United States dollar.
Question:
How many grains of pure silver were meant to be in a single dollar?