russia
Germany
Germany
Italy was the country that, under Benito Mussolini, was an ally of Germany, until the Italian people deposed the dictator, and Italy became an ally of the allied powers.
That would be Germany.
Japan and Austria were 2.
The USSR, It was not properly classed as an "ally" it was more like a "neutral ally" to the USSR and Nazi Germany.
Germany and the USA, no doubt.
Russia. Or rather, the Soviet Union.
Romania was an ally of Germany.Romania was an ally of Germany.
Canada
There really was no major tension between the two; France was just an ally of a country at war with Germany