Wow, this is a very interesting and global topic for reflection! It is impossible to choose one particular person from the past. I dont even know from what field this person would be, from the world of science or art or politics.
Of course, I will not choose one person, but there are three people, who I remember first.
1. Leonardo Davinci. Despite the fact that this person is more often Include to the world of art, he is more interesting to me as an inventor. It was really an amazing person who for several centuries outstripped his contemporaries. I do not know what specific question I would ask him. I would just like to talk with him.
2. Dmitry Mendeleev. Great scientist! And my main question is, is it true that the periodic table of elements he saw in a dream? This is very interesting and important for me, because I often get answers to important questions in my dreams. And sometimes I write poems in my dreams.
3. Peter the Great. This man fascinates me that he was a dreamer! Just like me :) He built the most beautiful city on earth in which I live and which I love very much. What would I ask? Would ask autograph and selfi with him ahahah.