How did the dismissal of Bismarck change the fortunes of Europe?Studying AP European History Otto von Bismarck 1815-1898) and Kaiser Wilhem II...

Of course, we can never be sure about what
might have happened if things had been different.  However,
we might imagine that WWI would not have happened if Bismarck had not been dismissed and
Kaiser Wilhelm II had not taken more control over Germany's foreign
affairs.

The thinking here is that Bismarck could have
restrained the Kaiser's desire for Germany's "place in the sun."  Bismarck's policy had
been to try to avoid any actions that would really scare France or Britain.  He did not
want them to see Germany as a threat.  By contrast, the Kaiser wanted Germany to pursue
power vigorously.  When the Kaiser took over, he took actions that made Germany seem
like a threat.  Because of this, Britain and France (especially) got worried and started
to think about war.  This meant that war was much more likely to happen if anything came
about to set it off.

So, if Bismarck had been able to keep
Germany on a less aggressive path, WWI might not have happened, Hitler might not have
come to power after WWI, and WWII and the Holocaust might not have happened.  Of course,
there is no way to know for sure...