I looked a this time to reflect and to regroup and research opportunities further my career aspirations.
There could be very personal reasons for a break like that. It may have nothing to do with career or traveling, it may just be something personal. In other words: it may be nobody's business. Good questions to ask in reply are: "Why do y ou want to know? How will it help you to know that? Did you stop to consider that there might be a reason I didn't include it in my CV?"