If, by "man made", you mean a line drawn on a map, rather than a natural geogrephical feature like a river, the border between New York State and NJ is man- made.
New Jersey's only man-made border is the one with Delaware, which was determined by the Twelve-Mile Circle and the Transpeninsular Line.
Border landscape refers to the natural or man-made features that exist along a border between two regions or countries. This can include physical barriers, vegetation, or terrain that define the boundary and contribute to the overall landscape of the area.
A border is a physical or political boundary that separates two countries. It can be defined by natural features like rivers or mountains, or it can be man-made, such as a fence or wall. Borders are important for defining the territorial limits of a country and regulating movement of people and goods between nations.
The Great Wall of China is often incorrectly cited as the only man-made structure visible from space. In reality, there are many other man-made structures visible from space, such as large cities, highways, and airports.
A state border is the boundary line that separates one state from another within a country. State borders are typically determined by natural features like rivers or mountain ranges, or by man-made markers like fences or monuments. Crossings at state borders are regulated by authorities to control the movement of people, goods, and services between states.
The border between Haiti and the Dominican Republic is largely demarcated by physical barriers, such as mountains and rivers, as well as man-made markers like fences and walls. Border patrols and checkpoints are also common along the boundary to regulate movement between the two countries.
None. There is only the man-made border that separates the US from Mexico.
Suez canalNone
aisle
Only synthetic oil is man-made.
Time zones are a man-made invention and tool. Mother nature only knows daylight or darkness.
All borders are man-made. They may coincide with natural features such as rivers and mountains; but they are all artificial constructs solely for our convienence.
The Man and the Challenge - 1959 Border to Border 1-8 was released on: USA: 31 October 1959
mewtwo
The Trans-Siberian Highway?
All states, if you think about it, have borders that are man-made. you could pass from one state into another without noticing, unless the border is marked on a map or by roadside signs.
Man-made resources are things that only humans can build, such as railroads and skyscrapers.
Pretty much every national border in the Middle East or Africa was made by man. Almost none of them (with a few exceptions like the Israeli-Jordanian border) follow any major geographic marker such as a river or the highest peaks of mountains, etc.