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.
<span>When it comes to what happened to the people's culture with migration patters, the answer is that as the people migrated the spread culture through diffusion. This means that their cultures mixed and new cultures were made by having cultures diffuse and mix and adopt elements of other cultures, but they would also lose some parts of their own that would get lost in time. </span>
It is D: basis of the limited government structure throughout the Constitution.
James Madison is the one who say that