The national boundary is the boundary of a sovereign country exercising sovereignty, which is often demarcated by mountains, rivers, lakes or sea areas, which is called the geocultural boundary and is divided by physical geographical entities;
- Africa's "one-size-fits-all" borders
Africa is the continent with the largest number of "cut-size-fits-all" borders in the world, especially in North Africa, where there are six or seven straight lines or geometric demarcations, such as the borders of Mauritania and Mali and Algeria, and the borders of Libya and Egypt, Chad, Egypt and Sudan, and Namibia.
Most of these linear borders are a product of the colonial era, and North Africa is straddled with the world's largest Sahara Desert, most of which is barren. At the beginning, the colonizers did not have the energy to go to the interior of Africa for further exploration, so they simply and rudely used a ruler to demarcate the boundaries on the map, or divided each other's spheres of influence by latitude and longitude. After the independence of these colonies, they inherited the demarcation method of the original suzerain, so that the strange national borders that are now horizontal and vertical were formed.
- Interesting facts about the borders of the Sudanese in Egypt
It is worth mentioning that Egypt and Sudan have the world's largest terra nullius outside of Antarctica - Biltaiweil, both countries are not interested in this inland area with poor soil, have no will to sovereignty, and both want the other side to recognize the ownership of this area in exchange for the sovereignty of the Haraib triangle, after all, Haraib has a lot of strategic value.
In 2014, the American Heaton went to Biltaville to establish the "Kingdom of Northern Sudan" and became the king of himself, the reason for which was to fulfill the "daughter's princess dream". At present, the population of the "Kingdom of Northern Sudan" is only two father and daughter...
- "Cut-and-size-fits-all" borders in the rest of the world
In addition to Africa, Indonesia in Asia and Papua New Guinea in Oceania were originally bordered by the 141 ° east longitude, but in the 90s of the 19th century, gold was found near the Frye River, the longest river on the island of New Guinea, and the river crossed the 141 ° east longitude line exactly twice, so the British colonists proposed that the area should be bounded by the Frye River in order to dominate the gold resources, which is why there is a small curve on the straight border between the two countries.
Finally, the United States and Canada in North America also have the phenomenon of dividing national boundaries by longitude, and even many states in the United States and Canada are divided horizontally and vertically by latitude and longitude, all of which are the legacies of the colonial era.
End of this issue.
Part of the source network, invaded and deleted.