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: LANDMARKS 
Clue: In the 1879 Mathew Brady photo seen here, this structure was about 150 feet tall

Answer: washington monument


Question: Category: WORLD MONUMENTS 
Clue: A statue of Chang & Eng Bunker stands in Samut Songkram in this country

Answer: thailand


Question: Category: BUSINESS & INDUSTRY 
Clue: Just for grins, in 1986 this industrialist acquired a stake in Church & Dwight, maker of a baking soda

Answer:
armand hammer