Final answer:
The harsh cold weather, shortage of supplies, and lack of manpower significantly hindered the Russian army on the eastern front.
Explanation:
The Russian army was hindered on the eastern front mostly because of:
- Cold weather: The bitter Russian winter played a key role in freezing the German invasion in its tracks, as the German forces were ill-equipped for winter conditions.
- Shortage of supplies: Inadequate munitions and serious food shortages on the home front impacted the Russian army's ability to effectively fight the German forces.
- Lack of manpower: Demoralization, desertions, and insufficient rifles among Russian soldiers weakened the army's combat effectiveness.
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