Finland:
6 December 1917 (from Russia)

France:
486 (unified by Clovis)

French Guiana:
none (overseas department of France)

French Polynesia:
none (overseas territory of France)

Gabon:
17 August 1960 (from France)

Gambia, The:
18 February 1965 (from UK)

Georgia:
9 April 1991 (from Soviet Union)

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;
unification of West Germany and East Germany took place 3 October
1990; all four powers formally relinquished rights 15 March 1991

Ghana:
6 March 1957 (from UK)

Gibraltar:
none (overseas territory of the UK)