What officially started the American Revolution A) the battle at Concord between the French navy and American soldiers. B) the Battle at Lexington between British soldiers and American militiamen?

Which factor has played the most important role in changing the way history is studied over time?

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Which of the following questions must be asked about the use of resources in an economic system a. what allocation will provide the fastest growth b. what is the most secure allocation c. what is the fairest allocation d. what is the most effective allocation