They formed in river valleys, that is where all of the first one's formed.
Answer:
The correct answer is punishment
Explanation:
We still use Roman numerals on things like clocks
States demanded the power to regulate trade is best answer why did Congress call for the Constitutional Convention, articles of confederation simply didn't regulated that matter
answer: you will need a deal between the north and the south. you would also need leaders from both sides to negotiate peace and prevent further violence. hope this helps!