How many person died in world war 2 ?

There is an estimation, 50 million to over 80 million people who have died during World War 2.

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omg i dont know oops sorry

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.