Given the task definition and input, reply with output. You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.

Initially it was for practical reasons. Heels were added to shoes around the 1500s to keep horsemen's feet from slipping from the stirrups.

Eventually, it became fashionable to wear heels.
Why do shoes have heels? Feet were designed flat...?