Fiji is a paradise island located in the south pacific ocean. but which of the countries featured in the word jumble is the closest neighbor

The answer is - Tuvalu.

The closest neighbor of Fiji is Tuvalu. While Fiji is one of the biggest Pacific countries, Tuvalu is one of the smallest, not just in the Pacific but in the whole world. Tuvalu is a small island country where life is much more relaxed than in most of the countries and it is a country that is considered as a paradise for tourists. Unfortunately, because Tuvalu is on a very low altitude and the sea level is rising in the past decades, it is very possible that in the few coming decades most of this country will be submerged under water.

answer; they use longitude and latitude and   global grid system; good luck