D. Plains Indians started hunting buffalo more efficiently.
This helped them move more accessibly throughout the land.
I believe the answer is A but I'm not positive.
Answer:
Democracy is a system of government where the people are allowed to participate in the proposal and creation of laws.
Explanation:
Throughout history, different places have had different forms of democracy.Two of the most common forms of democratic government are direct democracy and representative democracy. In a direct democracy, citizens are directly involved with creating laws, and in a representative democracy, citizens elect representatives who create laws on their behalf.
The purpose was to transport mail