Delaware, Pennsylvania, Massachusetts, New Jersey, Georgia, Connecticut, Maryland, South Carolina, New Hampshire, Virginia, New York, North Carolina, and Rhode Island
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bartering of goods for each other
Explanation:
After the decline of the Indus valley civilization, Vedic age started in the Indian history. Generally dated, between 1500-600 B.C. as most of the modern scholars agree on this date. References point to the use of barter system and metallic currency in that age. In the Vedic Age, the cow stood as a higher unit of barter and cowrie-shells were used for lower purchase
I believe that they were actually labeled as observers. Or are there multiple choices.
The reason they went to war is when the Athens interfered in Persian affairs.
The one that was a factor in the U.S entry in world war I was :
B. the sinking of the Lusitania
hope this helps