To your first question, my contention is that physical travel is a privilege not afforded to everyone but there are many ways to have international experiences besides that, so yes your work experiences also matter.
To your second one, I have an idea of what your exact worry is concerning the locations, but perhaps share your exact worry so we can help you adequately?
My overall advice is for both types of experiences, spend time reflecting on them to really uncover HOW those experiences broadened your understanding of other cultures. That is what you want to put down on paper. Keep that in focus and 100 words is not a lot. You will have something substantial to say. As mentioned above, look up Zambuko advisory and you can book a free consultation session with my firm to discuss these types of questions more.