When studying history, you should
(a) base your conclusions on other historian's opinions.
(b) look at how people view events in present times, not past.
(c) draw conclusions based on evidence, not modern values.
(d) use modern ideas to evaluate the historical context.

D) use modern ideas to evaluate the historical context

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.

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.