Background:
The archipelago of "The Friendly Islands" was united into a
Polynesian kingdom in 1845. It became a constitutional monarchy in
1875 and a British protectorate in 1900. Tonga acquired its
independence in 1970 and became a member of the Commonwealth of
Nations. It remains the only monarchy in the Pacific.

Geography Tonga

Location:
Oceania, archipelago in the South Pacific Ocean, about two-thirds
of the way from Hawaii to New Zealand

Geographic coordinates:
20 00 S, 175 00 W

Map references:
Oceania

Area:
total: 748 sq km
water: 30 sq km
land: 718 sq km

Area - comparative:
four times the size of Washington, DC

Land boundaries:
0 km

Coastline:
419 km

Maritime claims:
territorial sea: 12 nm
continental shelf: 200-m depth or to the depth of exploitation
exclusive economic zone: 200 nm