The economic stability that lead to the neolithic revolution was: C. Political systems
Economic stability lead to a situation when people no longer wanted to use violence toward one another when they want to obtain a certain type of resources. This is why a political system to create a regulator was made during the neolithic revolution.
Are you talking about this chart? If so, it appears that 30% of military deaths during World War I were Russian deaths.
I'm not really in this but hope this helps.
WHITE PRIMARY. A legal device once employed by some Southern states to prevent African Americans from exercising their right to vote in a meaningful way. In the 1920s Southern states began using the white primary as a way of limiting the ability of African Americans to play a part in the political process,
It forced Georgia to allow African-Americans to vote in the Democratic primary. But, the Democrats had other ideas…they wanted to make their primary’s a private club. Governor Ellis Arnall prevented that from happening, and the white primary neared its end. But, it would still be a struggle.
For hundreds of years education in the Roman Empire was done within the families by the parents or Greek slaves who were very educated. As education advanced it was made available to everyone although there was no attendance policy. Slowly the family began to loose power and children were being sent away to proper schools. That would lead me to believe it could be (d).