What countries battled each other on the "Eastern Front."

Germany and Austria/Hungary
Germany and Russia

Russia and Britain
France and Germany

germany and russia

Explanation:

The war was fought between Nazi Germany, its allies and Finland, against the Soviet Union and its allies. The conflict began on 22 June 1941 with the Operation Barbarossa offensive, when Axis forces crossed the borders described in the German–Soviet Nonaggression Pact, thereby invading the Soviet Union.

judaism, christianity and islam, are all abrahamic religions and therefore have in common the hebrew idea of a single god which is the source of all morality. the idea of the covenant is only related to judaism, while dharma is a concept of indian religions and the four noble truths are basic principles of buddhism.