The way that the spoils system affect politics during the gilded age is : it helped a political party gained supporters, and breaking the stalemate between democrats and republican.
The answer to this question is A. Jet streams
Jet streams are located near the altitude of the upper troposphere. It's a movement of wind that travels from one side of the planet hemisphere to another. The movement of jet streams will bring up different temperature of air which could influence the weather that exist in certain regions.
The correct answer is:
A-"Population Increased"
This is the correct answer because around the Neolithic revolution it was a wide-scale transition to many people and their cultures which making it a increased the Population as time went on
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I'm pretty sure your answer is the second option, they created the States' Rights Democratic Party