1. INDUSTRY KEY INDUSTRIES BARELY MADE A PROFIT SOME INDUSTRIES LOST BUSINESS TO FOREIGN COMPETITION & NEW AMERICAN TECHNOLOGIES SOME INDUSTRIES SUFFERED FROM DECLINING DEMAND FOR THEIR GOODS AFTER WWI THE COAL INSUTRY DECLINED BECAUSE OF THE DEVELOPMENT OF NEW SOURCES OF ENERGY NEW HOUSING STARTS DECLINED, AFFECTING OTHER BUSINESSESS THAT DEPENDED ON HOME CONSTRUCTION

2. AGRICULTURE AFTER WWI, DEMAND FOR FARM PRODUCTS FELL DRASTICALLY, AS DID PRICES MANY FARMERS COULD NOT PAY OFF THEIR DEBTS & LOST THEIR FARMS, WHICH CAUSED SOME RURAL BANKS TO FAIL CONGRESS PASSED FEDERAL PRICE SUPPORTS FOR FARM PRODUCTS, BUT PRESIDENT CALVIN COOLIDGE VETOED THEM

3. CONSUMER SPENDING BY MAKING CREDIT EASILY AVAILABLE, BUSINESSES ENCOURAGED AMERICANS TO PILE UP A LARGE CONSUMER DEBT FACED WITH RISING PRICES, STAGNANT WAGES, & HIGH LEVELS OF DEBT, CONSUMERS DECREASED THEIR BUYING

4. DISTRIBUTION OF WEALTH NEARLY HALF OF AMERICAN FAMILES EARNED LESS THAN THE MINIMUM AMOUNT NEEDED FOR A DECENT STANDARD OF LIVING, WHILE THE RICH GOT RICHER THIS UNEQUAL DISTRIBUTION MEANT MOST CONSUMERS HAD TOO LITTLE MONEY TO BUY THE GOODS PRODUCED BY AMERICAN FACTORIES

5. STOCK MARKET MANY INVESTORS ENGAGED IN SPECULATION AND BUYING ON MARGIN, FUELING THE MARKET UPWARD & GENERATING GREAT WEALTH, BUT ONLY ON PAPER WHEN THE MARKET CRASHED, MANY INVESTORS LOST THEIR LIFE SAVINGS

6. BLACK TUESDAY October 29, 1929. 16.4 million shares were dumped on this day. Many had bought on margin and were now stuck with huge debts and others lost their entire savings. Brokers called in the money.

7. HAWLEY-SMOOT TARIFF ACT Effort to protect U.S. industry but caused retaliatory agricultural tariffs from other countries causing agricultural prices to fall hurting farmers but creating high surpluses.