Question

Which country was a German ally at the start of World War II but then joined the Allied Powers?

Answer 1

the Soviet Union…

After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied-Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany.

Answer 2

The most meme country of them all, Italy.

Step-by-step explanation:

Unfortunately it has become the most meme one of them all due to Mussolini driving the country into a war, let alone trying to restore the Holy Roman Empire, when the country was not at the correct position to do so.