How can I help you? I want to ask about common knowledge Ask away! What is the largest part of the human body? The epidermis (the skin) is the largest organ in the human body. Wow. I didn't know that. How about smallest bone of the human body? Where is it located? The stapes, in the middle ear, is the smallest bone in the human body. That's great. Then what do you call the fear of open spaces? Agoraphobia is the fear of wide open spaces. On what term is Trump of US Presidents? Trump is the 45th President of the United States and the 44th person to hold the office, as Grover Cleveland held the office at two separate times.