Problem: What US policy introduced in 1823, that efforts by European governments to colonise land or interfere with states in the Americas would be viewed by the USA as acts of aggression requiring US intervention, became one of the longest-standing tenets of US foreign policy?
Answer: monroe doctrine

Problem: The university in Linz, Austria, known as JKU is named after which scientist who wrote one of his major works there?
Answer: johannes kepler

Problem: Habib Bourguiba became the first President of which North African country in 1957?
Answer: tunisia

Problem: To whom was Mike Todd married when he was killed in a plane crash in 1958?
Answer:
elizabeth taylor