The correct answer is "C". It refers to an entire universe of people "Americans" as well as the phrase "in excess" which includes many of the indulgences and "deregulations".These are presented as the element of the the main reasons for the "economic crisis" in an extended period of time (the 1920s). Any of the other options qualifies as correct simply because they provide supporting details.
He pardoned former President Nixon
It was from a march from San Francisco to Washington D.C <span />
4 million. makes me sick to my stomach to think about it.
Sons of Liberty dump British tea. In 1773, a group of Massachusetts colonists disguised as Mohawk Indians board three British tea ships moored in Boston Harbor and dump 342 chests of tea into the water.