Germany
18 January 1871 (German Empire unification); divided into
four zones of occupation (UK, US, USSR, and later, France) in 1945
following World War II; Federal Republic of Germany (FRG or West
Germany) proclaimed 23 May 1949 and included the former UK, US, and
French zones; German Democratic Republic (GDR or East Germany)
proclaimed 7 October 1949 and included the former USSR zone; West
Germany and East Germany unified 3 October 1990; all four powers
formally relinquished rights 15 March 1991

Ghana
6 March 1957 (from the UK)

Gibraltar
none (overseas territory of the UK)

Greece
1829 (from the Ottoman Empire)

Greenland
none (extensive self-rule as part of the Kingdom of
Denmark; foreign affairs is the responsibility of Denmark, but
Greenland actively participates in international agreements relating
to Greenland)

Grenada
7 February 1974 (from the UK)

Guam
none (territory of the US)

Guatemala
15 September 1821 (from Spain)

Guernsey
none (British crown dependency)

Guinea
2 October 1958 (from France)