There have been 20 presidents since 1900
The prices of crops dropped, while the prices of shipping increased
Television
Television became one of the most important sources of entertainment to families since its invention, and it is still. virtually all families in the developed world owns a television and it virtually replaced the roles of theaters.
<span>Henry fords production methods affected the number of cars produced by increasing it.</span>
im pretty sure it was the Keatintg-Owen Child Labor Act
hope this helps <3