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Which country contains the ancient city of Timbuktu, once a major centre of Islamic learning?
Answer
Mali
In which city is the headquarters of the European Union’s European Commission?
Answer
Brussels
What armored vehicle did Leonardo da Vinci design for soldiers to attack from behind protective plates?
Answer
Fighting vehicle
What friction-reducing component did Leonardo da Vinci study in an early machine design?
Answer
Ball bearing
What device did Leonardo da Vinci design to help a diver breathe underwater?
Answer
Diving suit
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What device did Leonardo da Vinci design to help a diver breathe underwater?
Answer
Diving suit
What portable structure did Leonardo da Vinci design to span a gap without permanent supports?
Answer
Self-supporting bridge
What type of ship did Leonardo da Vinci sketch with two separate hulls?
Answer
Double-hulled ship
What mechanical knight did Leonardo da Vinci design around 1495?
Answer
Robot knight