This document provides an overview of key events and developments during the Republican decade of the 1920s. It describes the Red Scare following the Russian Revolution and Bolshevik rise to power. It also mentions several high-profile legal cases related to free speech and suspected communist sympathizers. Labor unrest is discussed through major strikes in steel and coal. The presidencies of Harding and Coolidge are summarized, focusing on isolationism, tariffs, immigration limits, and scandals. Economic boom is attributed to a growing consumer economy enabled by installment buying, electric power, and new products like Henry Ford's Model T automobile made possible by assembly line manufacturing.