You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: RULERS 
Clue: In 44 B.C. he was made dictator for life, a post abolished after he died the same year

Answer: julius caesar


Question: Category: WORLD RIVERS 
Clue: With 4, more national capitals are located on this river than any other river in the world

Answer: the danube


Question: Category: ROYALTY 
Clue: Since 1066, the only British monarch to have 3 children ascend to the British throne

Answer:
henry viii