← US History

The 1920s

Assembly lines, credit, and jazz remade daily life for some Americans while quotas and Klan violence pushed back on others.

5 topics · 16 questions

Each topic is a path, not a menu: work down it in order and every question builds on the one above. Click any of them to watch the answer draw itself.

The Assembly Line and Mass Production

  1. How it worksWalk me through how Henry Ford's moving assembly line cut the time to build a Model T from about 12 hours to 90 minutes.
  2. Going furtherWhat happens to a factory worker's daily routine once their job becomes one repeated motion on a moving line.
  3. Worked exampleTrace the Model T's price falling from about 850 dollars in 1908 to around 300 dollars by the mid-1920s.
Your turn1 of 2
Henry Ford's factories switched from workers walking between stations to carry parts and tools to a moving line that brought each car past stationary workers, each performing one task. Why did moving the car to the worker instead of the worker to the car change everything about making things?

Consumer Culture and Buying on Credit

  1. Going furtherWhat happens to a consumer economy built on credit the moment people's confidence in future income collapses.
  2. How it worksShow me installment buying letting a family drive home a car today while paying it off over the next two years.
  3. How it worksHow did radio and national magazine advertising create demand for products a shopper had never seen in person.
Your turn1 of 2
By the mid-1920s, many American families drove home a new car or brought home a radio without paying the full price up front. Why did Americans start buying products they hadn't actually saved up to pay for?

The Great Migration and the Harlem Renaissance

  1. How it worksWalk me through how the Great Migration's concentration in Harlem fed a burst of Black art, music, and writing.
  2. Going furtherWhat happens to jazz and blues once musicians who grew up in the rural South start playing in Northern cities.
  3. Worked exampleShow me the Great Migration's flow lines carrying about 6 million Black Southerners north and west between 1916 and 1970.
Your turn1 of 2
Between 1916 and 1970, about 6 million Black Southerners left the region their families had often lived in for generations, moving to Northern and Western cities. Why did so many make that choice?

Prohibition and Organized Crime

  1. How it worksShow me how Prohibition's ban on alcohol created a nationwide bootlegging and speakeasy network almost overnight.
  2. Common mistakeWhy isn't Prohibition's repeal in 1933 proof that Americans had simply given up on temperance.
  3. How it worksHow did Al Capone build a criminal empire in Chicago on the profits of illegal alcohol alone.
Your turn1 of 2
The 18th Amendment banned the sale of alcohol nationwide starting in 1920, but within a few years bootleggers and speakeasies were operating in nearly every city. Why did banning alcohol end up making criminals rich instead of making the country sober?

The Immigration Quota Acts of the 1920s

  1. How it worksHow did the quota system calculate each country's allowed immigrants from a census taken decades earlier.
  2. Going furtherWhat happens to the flow of immigrants from Italy, Poland, and Russia once the 1924 quotas take effect.
  3. How it worksShow me the 1924 Immigration Act's quotas favoring Northern Europe while nearly shutting out Southern and Eastern Europe.
  4. Ties togetherHow do the 1924 quotas connect to the immigration law overhaul that finally replaces them decades later in 1965?
Your turn1 of 2
For the first time, Congress in the 1920s set hard numerical limits on immigration by national origin, favoring Northern and Western Europe. Why did Congress decide to cap immigration this way?