Mountain ranges, Seas, Forests, Rivers, and Oceans are the only ones I can think of but anything that naturally serves as a blockade. What ever the obstacle is it has to slow down or force any enemy troops to turn around away from your country. One example is that the Ural Mountains separate Asia and Europe.
Rivers, Oceans, Seas, and Mountains.
which continents has fewest number of nations
Zambia has eight bordering nations. The Democratic Republic of the Congo borders Zambia to the north. Tanzania borders to the northeast. Malawi borders to the east. Mozambique borders to the southeast. Zimbabwe borders to the south. Angola borders to the west. Namibia and Botswana both have very short borders with Zambia to the southwest.
patrol the us borders
The Atlantic Ocean borders Venezuela as well as the nations of Colombia, Brazil, and Guyana.
Maps show physical features (e.g. coastlines, mountains, rivers, lakes, etc) and political features (e.g. towns, cities, counties, states, borders of nations). They can also show roads and other routes.
There are NO continents in South Africa. South Africa is one of the nations on the African continent.
South America, with 12.
They are based on the arbitrary borders of old European empires
Borders of some European nations changed. The League of Nations was formed.
Territorial integrity. :]
The Arctic Ocean.
Only Australia is both a country and a continent. Countries are members of the United Nations. Australia, which is both a country and a continent, is a member of the United Nations. Most continents are carved up into many countries, peoples, languages and beliefs. Continents as such, do not belong to geo-political organisations, etc.
South Dakota has no International borders.
-Bangladesh-Nepal -Bhutan -China -Pakistab
Brazil borders ten other countries. It borders every other country in South America except Ecuador and Chile.
French Guiana borders Brazil and SurinameEcuador borders Peru and ColumbiaUruguay borders Brazil and Argentina
they help protect borders and keep the nations security.
dudeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ur nubz
I guess you mean if both countries do share borders with other nations. In that case, they do: the US also borders Canada and Mexico also borders Guatemala and Belize.