Islam spread to various locations in various periods but the first place from which and to which it spread would be D - from Mecca and Medina through Arabia. Islam eventually spread even to further lands such as Europe, the US and Asia.
Mistreatment of different ethnic groups
If the answer can be a matter of opinion, I'd say I think it's because some countries who were 'involved' in the Axis Powers were forced to be subject to Hitler's rule. So the ones who had hearts and cared about human life, attempted to help these victimized Jews rather than deporting them to their deaths.