I'm a little confused with the use of "would". I found in a multiple-choice exercise the following sentence: "When he was younger, he_____________a lot of time travelling." The correct choice was "spent" which I clearly understand. One of the choices was also "would spend" and my question is why we can't use it since I've learned that "would" is used for past habits like "used to" and past simple and in this example we're talking about a past habit.I also know that the only case we can't use "would" is with past states but here we have a non-stative verb ("spend"). Thank you.