Final answer:
The countries that were members of the Allies at the start of the war were the United Kingdom, France, Soviet Union, China, and United States. The country that joined the Allies in 1941 was the Soviet Union.
Step-by-step explanation:
a) The country represented by 'a' on the map is Iceland, which is an island to the west of Europe.
b) The country represented by 'b' on the map is Ireland, which is a country in western Europe near Iceland.
c) The country represented by 'c' on the map is Germany, which is a country in the center of Europe.
d) The country represented by 'd' on the map is Italy, which is a country in southern Europe on a long peninsula.
e) The country represented by 'e' on the map is Poland, which is a country in eastern Europe between Germany and Russia.
f) The country represented by 'f' on the map is Russia, which is a large country in eastern Europe.
The countries that were members of the Allies at the start of the war were: United Kingdom, France, Soviet Union, China, and United States.
The country that joined the Allies in 1941 was the Soviet Union (represented by 'f' on the map).