A principle or set of principles lay down by authority as incontrovertibly true
The correct answer for this question is this one:
"The three most severe downturns in the united states economy since the 1920s is very a big challenging for the economy. It required them to double their effort to catch up. The economy is very important to the nation."
Studying history helps us understand and grapple with complex questions and dilemmas by examining how the past has shaped (and continues to shape) global, national, and local relationships between societies and people.
Cultural
, Communication
, Economic
, Political
hope this helps :)
