Impacts of the world war I were inflicting great changes politically, socially an economically inn United States.
Explanation:
Political changes: many women suffrage movements were held which led to the amendments of the constitution. First Red Scare hit the nation after the World war. Many officials' residences were suspected and raided on basis of communist insurgents into US. Palmer, attorney general of US took up campaigns against communists anarchists and established an organisation within the judiciary of US and it is popularly called Federal Bureau of investigation. Great migration enabled the southerners to migrate to the union states in search of better livelihood.
Economic changes: There was shortage of domestic of goods. As many people preferred manufactured goods than the home made goods. Also many of the overproduction of domestic goods were used in the war efforts. There was high inflation and the laborers were paid low wages in order to balance the operation costs. It gave rise to many labor unions going on protests for increase in wages. Industrialization enabled urbanization and immigration possible without any restrictions. Tolerance towards the European immigrants was low which also led to chaos. Introduction of the electricity and steel increased the productivity.
Social Changes: Roaring twenties had a greater impact of the rise of jazz era in the field of music. African Americans deliberated their grievances through music and literature which highly touched the hearts of the people. Progressive movement gave rise to many social reforms and changing lifestyles of the Americans. Competition to find better employment resulted in race riots in the society. Gilded age resulted in spoil system wherein corruption and party loyalty gave advantage to the people who were close to the president to acquire the high offices. Party loyalty was given high value than the knowledge, skill and expertise.
I'll answer just your first question. On Brainly, it's good to post separately for each question you have.
In the 1920s, people were so eager to invest and earn profits through the stock market that they bought stocks "on margin." In other words, they paid for only a marginal percentage of the stocks with their own funds, and borrowed bank funds for the rest of the purchase. By the late 1920s, 90% of the purchase price of stocks was being made with borrowed money. This inflated the market in a way that spiraled out of control, and in 1929 the market crashed.
In response to the market crash and the beginning of the Depression, the Smoot-Hawley Tariff (officially the Tariff Act of 1930) tried to protect American jobs by imposing heavy tariffs on imported goods. But what this did was to provoke other countries to impose their own tariffs as a response. As a result, world trade was greatly diminished and the Depression spread globally.
