It resulted in deaths of millions ranging from 75-200 million people. About 30% of Europe's population.
What makes a source credible is it has backed up information. Basically, it has to have supporting details so you know its true.
<span>The League of Nations had proud aims but was doomed because it was based on the Treaty of Versailles which most nations signed but disliked.</span>
The answer is courts interpreting the constitution so the Answer is C
