Prehistory is the period before and . the keeping of historical records the use of stone tools the use of bronze and iron tools the use of advanced farming techniques the invention of writing

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the answers are excess supply, and fall

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the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.