What is a joint congressional session? ( answer in your own words short as possible )

When both members of congress and the house meet in the senate chamber, usually to hear from the guest speaker. You see an example of this when the president delivers the State of the Union address.

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b - those executed came from every social and economic class

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.