What caused the stock market crisis of 2007?

The housing crisis started it.

People started loaning to money to people that they should not have. This created a huge problem and backfired on the government. The banks let people take out huge loans and they could not afford to pay it back so this had a huge impact.

your answer would be just capitalism.

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.