where is the dividing line between north and south america
Boundaries between the continents of Earth The border between North America and South America is at some point on the Isthmus of Panama. The most common demarcation in atlases and other sources follows the Darién Mountains watershed divide along the Colombia-Panama border where the isthmus meets the South American continent. Virtually all atlases list Panama as a state falling entirely within North America and/or Central America.[36]
North America The southern North American continent is composed of two regions. These are Central America and the Caribbean.[25][26] The north of the continent maintains recognized regions as well. In contrast to the common definition of "North America", that which encompasses the whole continent, the term "North America" is also used to refer to Canada, Mexico, the United States, and Greenland.[12][13][14][15][27]