Answer:
The sentence that best expresses the viewpoint of the author is : If we would make the German people a unified community and give them freedom before the world, then the Jew can have no place among us.
Explanation:
The whole given text is based on the fact that German people have denied the Jew the right to decide over the fate of the country or even over their own lives, treating them as if they were not part of it but a 'problem to be solved', the rest of the sentences only work as details to support this idea.
