The continent that is closest to Japan would be the continent of Asia. Japan is actually part of the Asian continent. The next closest continent would be the Australian continent, or the continent of Oceania.
There are two. Western Australia and Australia.
Spain
Syria is part of the continent of ASIA.
Australia is an island continent. Therefore, there are no other countries, only Australian states.
Australia is the only country in the world that is also its own continent. In effect, Australia is both a country and the smallest continent.
The first place to look for the closest country would be to know which continent Chile is located in, which is South America. Once you know the continent, this eliminates hundreds of other options. There are several countries that are relatively close (within 2000 KM), but Argentina is the closest.
Fiji falls under the Australian continent along with other south pacific countries and are sometimes regarded to as Oceanic.
Australia is a continent.
All Australian deserts are found on the continent of Australia.
Florida is the closest US State and the North American continent is the closest continent.
The Philippine Islands are closest to the continent of Asia. The group of islands are located closest to the coast of Vietnam, which is a country in Asia.