Answer:
Trade by barter
Explanation:
This economic system is known as the oldest economic system used by humans many years before money was first printed.
In this system, individuals traded their goods for another good that they wanted. It was not uncommon to see people trade copper for wheat or to trade a donkey for a dove.
This system made people to give out what they had (which they usually had in excess) for what they wanted.
One branch of government can check the other through the usage of "Checks and Balances", which states that no one branch can become to powerful, as the others have the right to suppress the other branch's power.
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"D. Congress" This was the correct answer for me so I hope this helps you!
They had the ability to take inventions created elsewhere and use them on a much bigger scale.
Answer:
The Consumer Price Index (CPI) is a measure of the average change overtime in the prices paid by urban consumers for a market basket of consumer goods and services