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.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

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