Answer:
1) USSR and France.
2) See the explanation.
3) They only entered the war in 1917 and only participated in a limited amount of major battles.
4) The Holocausts
5) Jews and African Americans (along with a list of other minority groups, another significant one being the homosexual group and the gypsies).
Step-by-step explanation:
3) A lot of reasons, mainly due to how the German occupiers treated the civilian population during their occupation of a large part of the European USSR. These include:
Nearly all of the over one million Soviet Jews who were methodically killed were citizens. Members of the mobile execution teams of the Einsatzgruppen shot the majority of them.
Another 6 million Soviet citizens perished from diseases, hunger, working themselves to death, famine, and other causes. The locals were intended to be made into slaves by the Germans. They seized a lot of food without giving a thought to the effects of the following hunger. Additionally, they were using starvation and hardship as a way to partially depopulate the East of Slavs because they genuinely wanted the number of Slavs to decrease.
The Germans' "anti-partisan" actions amounted to little more than moving around burning communities and killing all or the majority of the villagers with their auxiliary forces. They were essentially retaliation actions meant to chastise the local populace for supporting the rebels and deprive them of support. The Germans would kill tens of thousands of individuals, few of whom could be classified as "partisans," while suffering extremely low losses. Thousands of people died as a result—possibly more than 700 000—and hundreds of communities were completely destroyed.
Numerous people perished as a consequence of the Soviet regime's wartime policies. Numerous people perished during "population transfers," a process in which particular ethnic groups were singled out for removal for a variety of reasons, frequently because they were thought to have cooperated with the Germans or were simply viewed as being unreliable. (to be fair, some of these deportations occured before the war or shortly after the war). Germans, Balts, Finns, Tatars, Chechens, Kalmyks, and other ethnic groups are among them. Numerous thousands of them perished as a result of the difficulties they faced.
*Thousands of Soviet POWs who also happened to be Jewish were put to death. Along with non-Jewish Soviet POWs, some also died from starvation or working themselves to death.