49 Parallel
Radcliffe Line
The Mason - Dixon Line
the treaty line
The great Lakes
It is the Canda-United States border, but is officially known as the International Border.
The International Date Line marks the boundary between two consecutive calendar days, creating a difference in time of up to 24 hours. This imaginary line generally follows a meridian of longitude in the Pacific Ocean and helps account for the Earth's rotation and time differences across the globe.
Ottawa is the name of a major river which, in part, forms the boundary between the provinces of Ontario and Quebec. Ottawa is the name of a city on the Ottawa River that is the Capital of Canada. Ottawa is the name of an Algonkian First Nations band.
The African Boundary The southern boundary of the tropics is the Tropic of Capricorn.
You may referring to the Mason-Dixon line. See the related Wikipedia link listed below for more information:
a front.
Radcliffe line separates India and Pakistan
The border between India and China is referred to as the Line of Actual Control (LAC). It is a de facto boundary that separates the two countries and is not fully demarcated or agreed upon by both sides.