QUESTION: Generate a question with a factual answer?

ANS: Who built the "ascending room", in 1823?

QUESTION: Generate a question with a factual answer?

ANS: After South Carolina passed an ordinance of nullification, who was sent to Charleston's forts?

QUESTION: Generate a question with a factual answer?

ANS: To somewhat avoid the water vapor in the atmosphere, where can an observatory be sited?

QUESTION: Generate a question with a factual answer?

ANS:
Which state borders Tennessee to the east?