QUESTION: Generate a question with a factual answer?

ANS: What was the cost for the first published copies of On the Origin of Species?

QUESTION: Generate a question with a factual answer?

ANS: What is navigation based on?

QUESTION: Generate a question with a factual answer?

ANS: What did the French armies decide on to protect against every possible attack point?

QUESTION: Generate a question with a factual answer?

ANS:
Who tried to outlaw slavery?