Australia's closest neighbour is Papua New Guinean. From the tip of Cape York Peninsula in Australia's north to the closest point in Papua New Guinea is a distance of only 150 km. Given the numerous islands across Torres strait! which lies between the two countries, theoretically they are even closer.
which civilization was closest neighbor
Tibet's closest neighbor is Nepal.
The closest southern neighbor would be Mexico.
USA is the closest southern neighbor of Canada.
Australias an island, so it has none =.=, PNG, Nz, Malaysia and Antarctica are pretty close to it though.
Switzerland
poutugal
Switzerland
mars
op[[;']
.... well that depends on where you are....
Mexico