What European nation still pledges its allegiance to a foreign monarch in its national anthem?

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How many wheels are there on the trailer of an "18-wheeler" truck?

Central Europe Time is equal to Greenwich Mean Time plus how many hours?

What word refers to minimum attendance necessary for US Congress to conduct business?

What nation removed the prefix "Trans" from before its name in June 1949?

Which country is also the world's largest archipelago?

How many kilograms make up a metric tonne?

Which is larger, the U.S. gallon or the Imperial gallon?

What duo’s first names were Don and Phil?

Which "South Park" character gets killed in almost every episode?

How many years were Whitney Houston and Bobby Brown married for?

What was the ultimate destination for most travelers of the Underground Railroad?

Who was the second president of the US?

Where did a medieval knight wear his gauntlets?

Ford produced the Model T in only what color after 1913?

What is the atomic number of Californium?