The correct answer for the question that is being presented above is this one: "Hitler used propaganda, terror tactics, secret police (Gestapo), he outlawed other political parties, and made the army swear personal allegiance to him. <span>The Nazi-Soviet Pact was a 10 year Nonaggression pact that Germany signed with the Soviet Union in 1939 (which Hitler obviously broke a mere 2 years later). "</span>
"<span>d. high levels of both minerals and salinity" would be the best option, since without direct contact with larger bodies of water it's very hard for the minerals and salt to dissipate and "spread out".</span>
The radiation left after the war. Along with the many people who died thereafter for many years. This also caused a nuclear war of sorts later on with Russia.