Answer:
The Nazis believed that the Aryan race was the superior race, and that it was destined to dominate all of Europe, and eventually the world.
The Aryan race was composed of Europeans of Germanic descent that inhabited not only Germany, but also Austria, The Netherlands, and Scandinavia.
They considered other "races" to be honorary aryans, like the Japanese or the Chinese. They also had a positive opinion on the British people.
They deemed all other races as inferior, and they had a particularly bad opinion about the Slavic Peoples of Eastern Europe and the Jewish People. This led them to believe that these races should be exterminated and they carried out this plan to a large extent, specially against the Jews, who perished by millions during the genocide known as the Holocaust.