Why did the economy prosperity of the 1920s come to an end in 1929

The period from 1920 to 1929 is known as the Roaring Twenties. Those years were exciting, fascinating, and entertaining for the U.S. population, whose sons had just fought and won World War I (1914–18), the war that had promised to end all wars. Everyone was enthralled with the new gasoline automobiles that Henry Ford (1863–1947) had made affordable. Women had gained the right to vote, and some had acquired new electric machines that made life easier, such as washing machines and vacuum cleaners. Every day more Americans brought a radio into their homes; the radio brought music and news that thrilled listeners. The new moving pictures captivated audiences in palace-like movie houses. Businesses and manufacturing industries continuously expanded. The prices of their stocks steadily increased through the 1920s, going on a wild ride upward between 1926 and October of 1929. Stock prices went far beyond realistic values and had little basis in the health of the companies. These skyrocketing stock prices signaled trouble for the U.S. economy.