The list. Take note that some of the countries listed were formerly fighting on the side of Germany, Japan and the Axis:
United Kingdom, September 3, 1939
Soviet Union, June 22, 1941
United States of America, December 8, 1941
Poland, September 1, 1939
France, September 3, 1939
Australia, September 3, 1939
New Zealand, September 3, 1939
Nepal, September 4, 1939
Newfoundland, September 4, 1939
Tonga, September 4, 1939
South Africa, September 6, 1939
Canada, September 10, 1939
Denmark, April 9, 1940
Norway, April 9, 1940
Belgium, May 10, 1940
Luxembourg, May 10, 1940
Netherlands, May 10, 1940
Free France, June 18, 1940
Greece, October 28, 1940
Kingdom of Yugoslavia, April 6, 1941
Tannu Tuva, June 15, 1941
Panama, December 7, 1941
Philippines, December 7, 1941
Costa Rica, December 8, 1941
Dominican Republic, December 8, 1941
El Salvador, December 8, 1941
Haiti, December 8, 1941
Honduras, December 8, 1941
Nicaragua, December 8, 1941
Republic of China, December 9, 1941
Guatemala, December 9, 1941
Cuba, December 9, 1941
Provisional Government of the Republic of Korea, December 9, 1941 (Govt. in exile)
Czechoslovakia, December 16, 1941 (Govt. in exile)
Mexico, May 22, 1941
Brazil, August 22, 1942
Ethiopia, December 14, 1942
Iraq, January 17, 1943
Bolivia, April 7, 1943
Iran, September 9, 1943
Italy, October 13, 1943 (formerly a member of the Axis)
Colombia, November 26, 1943
Liberia, January 27, 1944
Romania, August 25, 1944 (formerly a member of the Axis)
Bulgaria, September 8, 1944 (formerly a member of the Axis)
Finland, September 19, 1944 (formerly a member of the Axis)
San Marino, September 21, 1944
Albania, October 26, 1944 (formerly a member of the Axis)
Hungary, January 20, 1945 (formerly a member of the Axis)
Bahawalpur, February 2, 1945
Ecuador, February 2, 1945
Paraguay, February 7, 1945
Peru, February 12, 1945
Uruguay, February 15, 1945
Venezuela, February 15, 1945
Turkey, February 23, 1945
Lebanon, February 27, 1945
Saudi Arabia, March 1945
Argentina, March 27, 1945
Chile, April 11, 1945
People's Republic of Mongolia, August 9, 1945
Seeing as Pennsylvania is part of the United States and the United States fought for the Allies in World War I, yes.
The United Nations would be the allies.
The Allies
1914
Great Britain and the United States.
The United Nations
Yes, but in the later stages of the first World War.
i the United States Reconstruction. In the world early modern.
Woodrow Wilson was part of the allies during ww1 he was the president of the united states and the united states were on the allies side
the united states when they joined the war in 1917 Beau Stauffer Did
The allies of Great Britain, Russia, United States and other countries won World War 2 by defeating Germany and Japan.
France, Russia, and later, Italy and the United States