Which of the following factors contributed to american consumer spending during the 1920s?
soldiers coming home from war wanted to celebrate their homecoming by spending money.
shortages of many items led to higher prices for things the middle class wanted.
advertising convinced people to buy products to improve their standard of living
desirable luxury goods were imported from other countries at a very low price

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .