To truly understand the complexity of a historical event, historians must consider the (circumstances surrounding) of the event.

Yes.

Explanation:

there are a number of reasons and small incidents before the happening of historical event. to understand a particular historical event, the historians must see the circumstances and reasons due to which the historical event occurs. There are various reasons behind the historical event so it is necessary for the historian to see that reasons in order to fully understand the event.

1. where does the energy of a nuclear power plant come from?

d) political bosses should not hold office