We agree that there is space-time, the X-Y-Z axis and time. When the universe is expanding, more space-time is created, or more "room" will inherently exist as an outcome of the expansion process. The question is, what really created space-time? Sometimes we use the analogy of blowing a balloon to explain expansion of universe, in order for a balloon to expand when air is blown into it, there must be space for the balloon to expand, so that the space inside the balloon can increase. So, is there Space beyond space (our universe's space) so that expansion of the universe can happen?