Refers to the time period after world war i when america saw a boom in its economy, especially in the early 1920s.

The Roaring 20s

Explanation:

The The Roaring 20s corresponds to the period of economic prosperity that the United States had from 1920 to 1929, as part of the expansive period of an economic cycle. This prosperity benefited the whole society and caused the economy to continue growing at a rate that had not been registered before, generating a speculative bubble. But this prosperity would last a short period that would end on October 24, 1929, known as the Black Thursday, and with the arrival of the Crac of 29 that would finally culminate with the coming of the Great Depression because of this.

whose power in the senate is equal to the power of the speaker of the house?

four sitting presidents have been assassinated while in office but the first was abraham lincoln,