Australia does not have a land border with any country. However, it does have official borders / maritime boundary treaties with other countries, as specific water borders are officially laid out. Australia has a sea border with New Zealand, Papua New Guinea, the Solomon Islands, East Timor and Indonesia.
There is even an officially delineated border agreement between Australia and the French government, given that New Caledonia is French territory.
Some island countries have no land borders with other countries, such as Australia, Iceland, and Cuba. They may still have sea borders, areas of coastal waters that they claim.
All countries share borders, although these may not always be land borders. Australia, for example, shares no land borders with any other country, but it does have maritime borders with other countries.
Brazil borders 10 countries and Russia borders 13 countries.
Russia borders 11 countries
Every country has borders.
If you mean specifically Germany, or USA or Australia, then war and discovery made borders between continent's countries
Australia shares no land border with any other country. It is surrounded entirely by oceans and seas.
The country that borders Italy also is Vatican city state which has a population of about 550 Another country that borders Italy is San Marino. Additionally, you must have meant Austria not Australia.
Antarctica contains zero countries. North America has countries, but none of them are landlocked.
All European countries have borders.
Russia is the country that has borders with the highest number of other countries, bordering 14 countries in total.
No country does. the country that borders the most other countries is China: it only borders 14. Russia also has 14 borders. You then get France, Germany, China, Brazil etc, who are the next largest bordering countries.