<span>It was used through the 1800s by explorers and settlers as a way to get through the Appalachian mountains.
~ Hope this helps ~
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Answer:
4.2 million
Explanation:
This is such a weird question lol
In order to try to ensure a feeling of safety
Barter system- A method of exchange when no money is involved.
B and C can't be the answers because they are not exchanging anything.
D can't be the answer either because there is money involved.
So your answer is A) You trade an apple for a banana at school. because you are exchanging something with someone for something else thats not money.
Hope this Helps!!
