United States:
4 July 1776 (from Great Britain)
Uruguay:
25 August 1825 (from Brazil)
Uzbekistan:
1 September 1991 (from Soviet Union)
Vanuatu:
30 July 1980 (from France and UK)
Venezuela:
5 July 1811 (from Spain)
Vietnam:
2 September 1945 (from France)
Wallis and Futuna:
none (overseas territory of France)
Yemen:
22 May 1990, Republic of Yemen was established with the
merger of the Yemen Arab Republic [Yemen (Sanaa) or North Yemen] and
the Marxist-dominated People's Democratic Republic of Yemen [Yemen
(Aden) or South Yemen]; previously North Yemen had become
independent on NA November 1918 (from the Ottoman Empire) and South
Yemen had become independent on 30 November 1967 (from the UK)
Yugoslavia:
27 April 1992 (Federal Republic of Yugoslavia or FRY
formed as self-proclaimed successor to the Socialist Federal
Republic of Yugoslavia or SFRY)
Zambia:
24 October 1964 (from UK)