I really need to know what the answer is as well I am super confused
The second is a correct option
The word that best describes the United States economy during the 1920s would be "<span>d. prosperous" since this period in the US was known as the "roaring 20s" for this very reason. </span>
Some new inventions, designs and ideas that were created in the 1780s include:
-1780 Bifocal glasses were invented by Benjamin Franklin
-1780 The circular saw was invented by Gervinus
-1784 The threshing machine was invented by Andrew Meikle
-1786 The steamboat was invented by John Fitch
-1785 The working parachute was invented by Blanchard
-1785 The power loom was invented by Edmund Cartwright
Hope this helps! :)