The Relative location for Waterton Lakes is Ablberta South Park, where is nearby forty-ninth parallel; it is Canada / United States border.
The bold word , which is ''where'' should it be that is or where?
The relative location for Waterton Lakes is Alberta South Park, which is near the forty-ninth parallel; it is the [border between] Canada and the United States.
Questions - what do you mean by "relative location"? Which is the border - Warterton Lakes or the Forty-ninth Parallel?