The following is an excerpt from PIC (Pacific Islands Center) Guidebook
POPULATION 103,197 (2018 WORLD BANK)
RACE Polynesian
EEZ 700,000㎢
SIZE 720k㎡ (2018 WORLD BANK)
CURRENCY Pa’anga or Tongan dollar
CAPITAL Nuku’alofa
LANGUAGE Tongan, English
INDEPENDENCE DAY June 4, 1970
COUNTRY DATA Ministry of Foreign Affairs of Japan
https://www.mofa.go.jp/region/asia-paci/tonga/index.html