This is something you can Google very easily.
Answer:
I was just learninababt this but I don't remember
B is the correct answer.
Civil Service Reformers were led by people such as Theodore Roosevelt and others who fought against patronage systems in the mid to late 1800s.
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The disintegration of the Roman empire freed Europe from rule by a single power. Imperial monopolies provided peace and stability, but by seeking to preserve the status quo also tended to stifle experimentation and dissent. When the end of empire removed centralized control, rival political, military, economic and religious constituencies began to fight, bargain and compromise and – in the process – rebuilt society along different lines.Explanation: