It was really the other way round. Germany invaded Poland on 1st September 1939. On 3rd September 1939 Britain and France declared war on Germany. In 1940, France was invaded by Germany and British troops were evacuated back to the UK. Due to strong public opinion, the US refused to become involved in the war but sent food and supplies to help Britain. After the attack on Pearl Harbour by Japanese forces on 7th December 1941, Germany declared war on the US and attacked US shipping in the Atlantic. Churchill and Roosevelt met and agreed to pool resources and that the Armed Forces of both countries would work together to defeat both Germany and Japan which they eventually achieved in 1945.
During the Civil War, the south hoped to ally themselves with France and England.
Cuba was an ally to the US during World War II. But after the war, Cuba became communist and joined on the side of Russia against US. Cuba and Russia were also launched the nuclear threat on the US and Mexico.
Ally
A country in central Europe invaded by Germany so it was an Ally
There were called the Allied Force, The Allies, an ally or the alliance.
England
Russia was not an ally of Germany in World War 1.
Romania was an ally of Germany.Romania was an ally of Germany.
In the WW1 Romania was an ally of Western countries.
Russia
During the Civil War, the south hoped to ally themselves with France and England.
All those are correct.
Austria
Germany,Italy, Japan
Germany, Japan, and Italy
== == Russia and Germany were never allies during World War I. They were on opposite sides from the beginning.
During World War Two, Italy's main ally was Germany.